Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4996885 | Differential pressure transmitter, a square root extractor | — | 1991-03-05 |
| 4922760 | Differential pressure transmitter, a square root extractor device therefor and methods of making the same | — | 1990-05-08 |
| 4833924 | Differential pressure transmitter, a square root extractor device therefor and methods of making the same | — | 1989-05-30 |
| 4679583 | Pneumatic control system, control means therefor and method of making the same | William L. Lucas, Gerald L. Frank, David M. Miller | 1987-07-14 |
| 4576194 | Pneumatic control system, control means therefor and method of making the same | William L. Lucas, Gerald L. Frank, David M. Miller | 1986-03-18 |
| 4355983 | Control panel layout sheet and method of making the same | — | 1982-10-26 |