Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 6871832 | Fiberglass, reinforced concrete hose shut-off valve | Gary D. Lehnhardt, Gordon Guslick, Rolando Altamirano, Gerald Biever | 2005-03-29 | |
| 4942899 | Cartridge pressure regulator | William D. Vork | 1990-07-24 | $1,052,000 |
| 4621975 | Centrifugal pump seal | — | 1986-11-11 | $1,214,000 |
| 4615485 | Paint circulation adapter and coupler | Sheila S. McKee | 1986-10-07 | $1,198,000 |