Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5123288 | Averaging pitot probe | Robert B. Tench | 1992-06-23 |
| 4911007 | Flowmeter | Geoffrey J. Parkinson | 1990-03-27 |
| 4756688 | Apparatus and method for the flow control of flue gas to combustion air in a regenerative heating system | Paul Stephen Hammond, Geoffrey J. Parkinson | 1988-07-12 |
| 4414633 | Data processing and recording apparatus | — | 1983-11-08 |