Issued Patents All Time
Showing 26–50 of 62 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5181535 | Compact swing check valve | — | 1993-01-26 |
| 5161570 | Top-entry check valve with threaded fasteners | — | 1992-11-10 |
| 5161566 | Top-entry check valve with screw-in seat | — | 1992-11-10 |
| 5156182 | Top-entry check valve with pin fasteners | — | 1992-10-20 |
| 5156183 | Top-entry check valve having spring retainer | — | 1992-10-20 |
| 5150733 | Compact swing check valve | — | 1992-09-29 |
| 5143113 | Top-entry check valve with cartridge secured by projections | — | 1992-09-01 |
| 5143112 | Top-entry check valve with cartridge secured by threaded projections | — | 1992-09-01 |
| D320644 | Swing check valve | — | 1991-10-08 |
| D319683 | Check valve | — | 1991-09-03 |
| D319684 | Swing check valve | — | 1991-09-03 |
| 5000223 | Swing check valve with secured cage | — | 1991-03-19 |
| 4982759 | Swing check valve with secured cage | — | 1991-01-08 |
| 4977924 | Swing check valve with secured cage | — | 1990-12-18 |
| 4971103 | Swing check valve with secured cage | — | 1990-11-20 |
| 4905728 | Swing check valve with hinge pin retainer | — | 1990-03-06 |
| 4872478 | Swing check valve | — | 1989-10-10 |
| 4872479 | Swing check valve | — | 1989-10-10 |
| 4872480 | Swing check valve | — | 1989-10-10 |
| 4872477 | Swing check valve | — | 1989-10-10 |
| 4860790 | Swing check valve disc | — | 1989-08-29 |
| 4860789 | Swing check valve with hinge pin insert | — | 1989-08-29 |
| 4852607 | Support for check valve disc | — | 1989-08-01 |
| 4852603 | Swing check valve with secured cartridge | — | 1989-08-01 |
| 4832076 | Swing check valve with hinge pin retainer | — | 1989-05-23 |