Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10449589 | Method and device for forming grooves in pipe elements | Daniel B Vicario, II, Matthew J. Puzio, Douglas R. Dole | 2019-10-22 |
| 9333548 | Method and device for forming grooves in pipe elements | Matthew J. Puzio, Douglas R. Dole, Daniel B Vicario, II | 2016-05-10 |
| 9011693 | Water polishing process | Gregory Mark Vero, Colin Bruce Ritchie | 2015-04-21 |
| 5355978 | Liquid-immersed disc brake | David Parry, Michael Taylor, Andrew R. Broadwell | 1994-10-18 |
| 5033591 | Disc brakes for vehicles | — | 1991-07-23 |
| 5012901 | Self-energizing disc brakes | Roy Campbell | 1991-05-07 |
| 4913267 | Vehicle disc brakes of the liquid cooled type | Roy Campbell, Andrew P. Green | 1990-04-03 |
| 4884494 | Pressure cylinder | Roy Campbell | 1989-12-05 |
| 4883149 | Vehicle disc brakes of the liquid cooled type | Roy Campbell, Andrew P. Green | 1989-11-28 |
| 4865168 | Vehicle disc brakes of the liquid cooled type | Roy Campbell, Andrew P. Green | 1989-09-12 |
| 4862998 | Self-energizing disc brakes | Roy Campbell, Andrew P. Green, David Parry | 1989-09-05 |
| 4852351 | Dual-circuit master cylinder with solenoid opened reservoir valve | — | 1989-08-01 |
| 4809588 | Hydraulic piston and cylinder assemblies | Roy Campbell | 1989-03-07 |
| 4796730 | Self-energizing disc brakes | Roy Campbell, Eric Henson | 1989-01-10 |
| 4768624 | Self-energizing disc brakes with cable assembly and cable casing therefor | Andrew P. Green, Roy Campbell | 1988-09-06 |
| 4768625 | Self-energizing disc brakes | Roy Campbell, Andrew P. Green | 1988-09-06 |
| 4736820 | Self-energizing disc brakes | Roy Campbell, Sigma Micke | 1988-04-12 |
| 4711327 | Self-energizing disc brakes | Roy Campbell, Andrew P. Green | 1987-12-08 |
| 4703836 | Self-energising disc brakes with links of different lengths | Robert R. Bishop, Roy Campbell | 1987-11-03 |
| 4702351 | Self-energizing disc brakes | Roy Campbell | 1987-10-27 |
| 4685541 | Self-energizing disc brakes | Roy Campbell | 1987-08-11 |
| 4676345 | Self-energizing disc brakes | Klaus Hillen, Roy Campbell | 1987-06-30 |
| 4653614 | Self-energizing disc brakes | David Parry, Roy Campbell | 1987-03-31 |
| 4557110 | Master cylinder assembly for a vehicle braking system | — | 1985-12-10 |
| 4553395 | Master cylinder assembly for a vehicle braking system | David Parry | 1985-11-19 |