Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5947146 | Low volume vacuum toilet assembly | Fred Leroy Lint, James A. Sigler, Pamela Kay Snyder | 1999-09-07 |
| 5408704 | Low volume vacuum toilet assembly | Fred Leroy Lint, James A. Sigler, Pamela Kay Snyder | 1995-04-25 |
| 5345618 | Vacuum toilet system | James A. Sigler, Richard W. Sprang, Edward McKiernan | 1994-09-13 |
| 5079950 | Level indicating in vehicle holding tanks | Edward McKiernan, James A. Sigler | 1992-01-14 |
| 4819279 | Vacuum toilet system | James A. Sigler, Richard W. Sprang, Edward McKiernan | 1989-04-11 |
| 4430251 | High energy emulsifier | William P. Patterson | 1984-02-07 |