Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7281490 | Gauge having a magnetically driven pointer rotation device | — | 2007-10-16 |
| D514007 | Pressure gauge | — | 2006-01-31 |
| 5012678 | Overpressure relief safety plug for pressure gauges | — | 1991-05-07 |
| 4938076 | Target fluid flow indicator gauge | — | 1990-07-03 |
| 4841782 | Target fluid flow indicator gauge | — | 1989-06-27 |
| 4347744 | Diaphragm type differential pressure gauge with overpressure relief protection | — | 1982-09-07 |
| 4297889 | Roll-up type U-tube manometer | James William Phillips | 1981-11-03 |
| D255666 | Air velocity gauge | Robert Butts | 1980-07-01 |