| TANGENT AIR Air Conveying Corporation
75203805 25 Nov 1996 | on 19 Oct 2018
| air filtration systems comprising blowers and conduits for use with pn... Class 011 Class 011 Environmental Control Instrument Products (lighting,heating,cooling,cooking) air filtration systems comprising blowers and conduits for use with pneumatic conveyers | | | CLASSIFIER Air Conveying Corporation
75199552 18 Nov 1996 | on 28 Oct 2017
| air filtration systems comprising receiving chambers, switches, filter... Class 011 Class 011 Environmental Control Instrument Products (lighting,heating,cooling,cooking) air filtration systems comprising receiving chambers, switches, filters and controls, for use with pneumatic conveyers | | | CLASSIFIER AIR CONVEYING CORPORATION
73658718 04 May 1987 | on 26 Jun 1995 | AIR FILTRATION SYSTEMS COMPRISING RECEIVING CHAMBERS, SWITCHES, FILTER... Class 011 Class 011 Environmental Control Instrument Products (lighting,heating,cooling,cooking) AIR FILTRATION SYSTEMS COMPRISING RECEIVING CHAMBERS, SWITCHES, FILTERS AND CONTROLS, FOR USE WITH PNEUMATIC CONVEYERS | |