Filters
on 14 Nov 2008
HUGHES TOOL COMPANY
72261192 · 21 Dec 1966
023
TONG DIES FOR USE IN OIL WELL EQUIPMENT,TONG DIES FOR USE IN OIL WELL ...
on 12 Apr 2008
HUGHES TOOL COMPANY
73635013 · 12 Dec 1986
008
EARTH BORING BITS,EARTH BORING BITS
on 06 Oct 2007
HUGHES TOOL COMPANY
72237147 · 24 Jan 1966
012
MIXTURE OF POWDERED ASPHALT AND POWDERED INERT FILLER WHICH MAY BE USE...
on 25 Jun 2005
HUGHES TOOL COMPANY
73431062 · 20 Jun 1983
007
Tubular Metal Tool Joints, i.e., Threaded Tubular Connectors for Well ...
on 05 Feb 2005
Hughes Tool Company
73375696 · 20 Jul 1982
007
Earth Boring Drill Bits Used in the Oil, Gas and Mineral Industries fo...
on 26 Jun 2004
Hughes Tool Company
72146383 · 07 Jun 1962
023
Earth Penetrating Tools Including Drill Bits, [ Core Bits, Reamers, ] ...
on 20 Jul 2002
HUGHES TOOL COMPANY
72112266 · 23 Jan 1961
023
Earth Boring Drills,Earth Boring Drills
on 11 May 2002
Hughes Tool Company
73182259 · 08 Aug 1978
037
Well Drilling Services Including Welding Tool Joints to Drill Pipe,Wel...
on 12 Jan 2002
HUGHES TOOL COMPANY
73228319 · 20 Aug 1979
007
Gas Lift Valves and Components Therefor Used for Petroleum Recovery fr...
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Robert a felsman (16)
Gerald w spinks (2)
James e bradley (2)
Felsman bradley (1)
H dennis kelly (1)
Correspondents
Robert a felsman (13)
Hughes tool company (3)
Chief patent counsel (2)
patent dept (1)
Aaron nerenberg (1)
Baker hughes inc. (1)
Carl a rowold (1)
Felsman bradley gunter (1)
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