Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5549157 | Electronic counter with pump-mounted sensor for cycle indication | Robert Marten Bultman, Kevin L. Newcomer | 1996-08-27 |
| 5493992 | Portable docks | — | 1996-02-27 |
| 5412915 | Dock plank assembly | — | 1995-05-09 |
| 5156493 | Dock kit | — | 1992-10-20 |
| 5114202 | Multipurpose trailer | — | 1992-05-19 |
| 5102552 | Membranes from UV-curable resins | Robert W. Callahan | 1992-04-07 |
| 4976897 | Composite porous membranes and methods of making the same | Robert W. Callahan | 1990-12-11 |
| 4328636 | Device for insect control and method | — | 1982-05-11 |
| 4290782 | Gas scrubber and method | — | 1981-09-22 |