Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5380159 | Pressure compensation device for high-pressure liquid pump | John H. Olsen, Chidambaram Raghavan | 1995-01-10 |
| 5226799 | Ultrahigh pressure poppet valve with low wear | Chidambaram Raghavan, Edmund Y. Ting | 1993-07-13 |
| 5111736 | Vented static seal assembly | Anton H. Buchberger, Sigurd C. Mordre | 1992-05-12 |
| 5050895 | High pressure dynamic seal | Mohamed A. Hashish, John H. Olsen, Anton H. Buchberger, Sigurd C. Mordre, David Tan | 1991-09-24 |
| 5037276 | High pressure pump valve assembly | — | 1991-08-06 |
| 4936512 | Nozzle assembly and method of providing same | — | 1990-06-26 |
| 4858967 | High pressure hose fitting and method for sealing high pressure hoses to fittings | Chidambaram Raghavan | 1989-08-22 |
| 4754526 | System including a multi-stepped nozzle assembly for back-boring an inground passageway | Kenneth E. Fender, ANDREW ARTHUR PAUL BURNS | 1988-07-05 |
| 4525911 | Method and apparatus for attaching blades to rotating structures | Steve S. Sisson, John E. Mercer | 1985-07-02 |