Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10316977 | Multi-outlet check valve nozzle | Michael J. Duer | 2019-06-11 |
| 7104279 | Method and apparatus for preventing stagnation in fluid reservoirs | Michael J. Duer | 2006-09-12 |
| 6953059 | Check valve with hanger | — | 2005-10-11 |
| 6585005 | Reinforced tide gate valve | Michael J. Duer | 2003-07-01 |
| 6561225 | Passive flow control valve | — | 2003-05-13 |
| 6412514 | Flip check valve | — | 2002-07-02 |
| 6367505 | Check valve with oversized bill | Andre T. Abromaitis, Michael J. Duer | 2002-04-09 |
| 6367783 | Fine bubble diffuser | — | 2002-04-09 |
| 6016839 | Air diffuser valve | Michael J. Duer, Chris Mitchell, A. Thomas Abromaitis | 2000-01-25 |
| 5931197 | Asymmetrical check valve | Michael J. Duer, A. Thomas Abromaitis | 1999-08-03 |
| 5769125 | Inversion-resistant, readily openable tide gate valve | Michael J. Duer, A. Thomas Abromaitis | 1998-06-23 |
| 5606995 | Inversion-resistant, readily openable tide gate valve | — | 1997-03-04 |
| 5282314 | Method of making a pressure relief value | — | 1994-02-01 |
| 5215123 | Pressure relief valve | — | 1993-06-01 |
| 4923166 | Pressure-reducing noise-abating control valve | — | 1990-05-08 |
| 4763527 | Temperature-resistant isolation fluid pressure detector | — | 1988-08-16 |
| 4607663 | Inversion-resistant, readily-openable tide gate valve | George W. Merritt | 1986-08-26 |
| 4585031 | Inversion-resistant tide gate valve | George W. Merritt | 1986-04-29 |
| 4534224 | Isolation fluid pressure detector | — | 1985-08-13 |
| 4523738 | Deformable sleeve for a pinch valve | George W. Merritt | 1985-06-18 |
| 4492253 | Tide gate valve | — | 1985-01-08 |
| 4372528 | Pinch valve sleeve | — | 1983-02-08 |
| 4268005 | Pinch valve | Lawrence L. Schneider | 1981-05-19 |