Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6908070 | Cylinder valve insert | Harsharan Grewal | 2005-06-21 |
| 6691978 | Cylinder coupling device | Harsharan Grewal | 2004-02-17 |
| 6688323 | Gas tank to pressure regulator coupling | Harsharan Grewal | 2004-02-10 |
| 6651695 | Diaphragm-operated pressure regulating valve | Harsharan Grewal | 2003-11-25 |
| 6450196 | Float valve | Harsharan Grewal | 2002-09-17 |
| 6431205 | Damper for diaphragm-operated pressure regulating valves | — | 2002-08-13 |
| 6408869 | Safety valve | Harsharan Grewal | 2002-06-25 |
| 5590620 | Tire air pressure warning device for wheeled vehicles | — | 1997-01-07 |
| 5398743 | Tire inflating and deflating system | — | 1995-03-21 |
| 5245997 | Valve cartridge assembly for a pressure regulator of supplied air breathing apparatus | — | 1993-09-21 |
| 5080156 | Vehicle wheel and axle assembly for controlling air pressure in tires with spaces between the bearing elements and the race members included in the air flow path | — | 1992-01-14 |
| 4971050 | Open circuit emergency breathing apparatus and pressure demand valve therefor | — | 1990-11-20 |
| 4917081 | Portable emergency breathing apparatus | — | 1990-04-17 |
| 4892128 | Vehicle wheel seal assembly | — | 1990-01-09 |
| 4800923 | Portable emergency breathing apparatus | — | 1989-01-31 |
| 4798203 | Portable emergency breathing apparatus | — | 1989-01-17 |
| 4794923 | Portable emergency breathing apparatus | — | 1989-01-03 |
| D297869 | Emergency breathing gas container and control mechanism | — | 1988-09-27 |
| 4750485 | Portable emergency breathing apparatus | — | 1988-06-14 |
| 4744357 | Portable emergency breathing apparatus | — | 1988-05-17 |
| 4724833 | Portable emergency breathing apparatus | — | 1988-02-16 |
| 4722333 | Portable emergency breathing apparatus | — | 1988-02-02 |
| 4705090 | Apparatus for controlling air pressure in vehicle tires | — | 1987-11-10 |
| 4578020 | Hydraulic motor | — | 1986-03-25 |
| 4409978 | Portable, self-contained breathing apparatus | — | 1983-10-18 |