Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5345618 | Vacuum toilet system | James A. Sigler, Edward McKiernan, Ronald J. Bailey | 1994-09-13 |
| 4854827 | Sanitary pump station | Edward McKiernan, James A. Sigler, Richard R. Lewellen, Mark W. Geis | 1989-08-08 |
| 4819279 | Vacuum toilet system | James A. Sigler, Ronald J. Bailey, Edward McKiernan | 1989-04-11 |
| 4604763 | Seal means for a flush valve assembly | — | 1986-08-12 |