| SANDWICH T. D. Williamson, Inc.
73302327 23 Mar 1981 | on 06 Mar 2023
| Pipeline Valves | | | SHORTSTOPP T. D. WILLIAMSON, INC.
72124246 18 Jul 1961 | on 22 Sep 2022
| Apparatus for Plugging Pipelines and Other Fluid Conducting Conduits Class 023 Class 023 Yarns and Threads SHORTSTOP | | | PIG SIG T. D. WILLIAMSON, INC.
72368960 24 Aug 1970 | on 22 Sep 2022
| PASSAGE INDICATOR WHICH IS USED TO INDICATE THE PASSAGE OF A PIPELINE ... Class 026 Class 026 Lace, Ribbons & Embroidery and Fancy Goods APPLICANT DISCLAIMS EXCLUSIVE RIGHT TO THE USE OF THE WORD "PIG" APART FROM THE MARK AS SHOWN. | | | TDW T. D. WILLIAMSON, INC.
72306290 29 Aug 1968 | on 29 Dec 2020
| FLANGES, PIPE NIPPLES, PLUGS FOR USE ON PIPELINES AND OTHER FLOW CONDU... Class 013 Class 013 Firearm Products FLANGES, PIPE NIPPLES, PLUGS FOR USE ON PIPELINES AND OTHER FLOW CONDUITS; PLUGS FOR PLUGGING THE ENDS OF PIPELINES AND OTHER FLOW CONDUITS; PIPELINE PIGS AND CUPS THEREFOR; SPLIT TEES FOR ATTACHING TO PIPELINES OR OTHER FLOW CONDUITS AND PLUGS FOR SUCH SPLIT TEES; BUSHINGS FOR PROVIDING AN ELECTRICALLY NONCONDUCTIVE SEAL BETWEEN ONE PIPE PASSING THROUGH ANOTHER PIPE; INSULATORS FOR SUPPORTING ONE PIPE INSIDE ANOTHER AND ELECTRICALLY INSULATING SUCH PIPES FROM ONE ANOTHER; VALVES; PLASTIC PIPE FITTINGS AND DEVICES FOR INDICATING THE PASSAGE OF A PIG THROUGH A PIPELINE Class 023 Class 023 Yarns and Threads MACHINES FOR PREVENTING FLOW THROUGH A CONDUIT BY INSERTING A PLUGGING ELEMENT THROUGH A LATERAL OPENING IN THE CONDUIT; MACHINES FOR TAPPING OPENINGS IN PIPELINES AND OTHER FLOW CONDUITS AND CUTTERS FOR SUCH MACHINES | | | STOPPLE T. D. WILLIAMSON, INC.
72278261 14 Aug 1967 | on 23 May 2019
| MACHINES FOR PREVENTING FLOW IN A CONDUIT BY INSERTING A PLUGGING ELEM... Class 023 Class 023 Yarns and Threads MACHINES FOR PREVENTING FLOW IN A CONDUIT BY INSERTING A PLUGGING ELEMENT THROUGH A LATERAL OPENING IN THE CONDUIT | | | TDW T. D. WILLIAMSON, INC.
73118663 11 Mar 1977 | on 15 Mar 2019
| APPARATUS, EQUIPMENT AND INSTRUMENTS FOR SURVEYING, INSPECTING, REPAIR... Class 006 APPARATUS, EQUIPMENT AND INSTRUMENTS FOR SURVEYING, INSPECTING, REPAIRING, CLEANING, SCRAPING, DRILLING, TAPPING, PLUGGING AND BYPASSING PIPELINES AND OTHER FLOW CONDUITS, PIPELINE SCRAPER PASSAGE INDICATORS Class 007 Class 007 Machinery Products HAND TOOLS, AND OTHER NON-POWER OPERATED APPARATUS AND EQUIPMENT FOR INSPECTING, REPAIRING, CLEANING, SCRAPING, DRILLING, TAPPING, PLUGGING AND BYPASSING PIPELINES AND OTHER FLOW CONDUITS Class 008 Hand Tool Products TOOLS, APPARATUS, MACHINERY AND EQUIPMENT FOR INSPECTING, REPAIRING, CLEANING, SCRAPING, DRILLING, TAPPING, PLUGGING AND BYPASSING PIPELINES AND OTHER FLOW CONDUITS
Class 009 Computer & Software Products & Electrical & Scientific Products METAL VALVES, PIGS, PLUGS, GATES, FITTINGS, SLEEVES, TAMPONS, JOINTS, T'S, SEALS, FLANGES, NIPPLES, BUSHINGS, CASING SUPPORTING CRADLES FOR PIPELINES AND OTHER FLOW CONDUITS
NON-METALLIC BUSHINGS, PLUGS, SEALS, FLANGES, CASING SEALS, CASING SUPPORT CRADLES, INSULATORS; INSULATING BRACKETS TO SUPPORT AND ELECTRICALLY ISOLATE ONE PIPE INSIDE ANOTHER; PLASTIC PIPES AND PIPE FITTINGS, ELASTOMERIC LINERS
Class 037 Construction and Repair Services CONSTRUCTION, MAINTENANCE AND REPAIR SERVICES FOR PIPELINES, GAS DISTRIBUTION SYSTEMS AND FOR INDUSTRIAL, REFINERY, CHEMICAL AND PROCESS PLANT PIPING SYSTEMS
Class 042 Computer & Software Services & Scientific Services ENGINEERING, INSPECTING AND SURVEYING SERVICES FOR PIPELINES, GAS DISTRIBUTION SYSTEMS AND INDUSTRIAL, REFINERY, CHEMICAL AND PROCESS PLANT PIPING SYSTEMS | | | KALIPER T. D. WILLIAMSON, INC.
73108530 06 Dec 1976 | on 24 Jul 2018
| EQUIPMENT-NAMELY, A PIG ADAPTED TO BE TRANSMITTED THROUGH A PIPELINE O... Class 009 Class 009 Computer & Software Products & Electrical & Scientific Products CALIPER Class 042 Class 042 Computer & Software Services & Scientific Services EQUIPMENT-NAMELY, A PIG ADAPTED TO BE TRANSMITTED THROUGH A PIPELINE OR OTHER FLOW CONDUIT TO SURVEY AND INSPECT THE INTERIOR THEREOF AND TO RECORD THE RESULTS | | | LOCK-O-RING T. D. WILLIAMSON, INC.
72016983 04 Oct 1956 | on 06 Jan 2018
| FLANGES AND PLUGS FOR USE ON PIPELINES,FLANGES AND PLUGS FOR USE ON PI... Class 013 Class 013 Firearm Products FLANGES AND PLUGS FOR USE ON PIPELINES | | | WEDGE-LOCK T. D. WILLIAMSON, INC.
72198246 20 Jul 1964 | on 12 Mar 2015
| PIPE PLUGS, AND THE LIKE Class 013 Class 013 Firearm Products PIPE PLUGS, AND THE LIKE | | | FLAWSONIC T. D. Williamson, Inc.
74028116 12 Feb 1990 | on 22 Dec 2001 | PIPELINE INSPECTION TOOLS, NAMELY ULTRASONIC DEVICES FOR THE INSPECTIO... Class 009 Class 009 Computer & Software Products & Electrical & Scientific Products PIPELINE INSPECTION TOOLS, NAMELY ULTRASONIC DEVICES FOR THE INSPECTION OF PIPES FOR INTERIOR AND EXTERIOR DEFECTS | | 
