Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9874503 | Systems and methods of use for digitally testing and reporting the pull-out strength of a fastener member | — | 2018-01-23 |
| 4361735 | Electret microphone circuit | Edward G. T. Johnson | 1982-11-30 |
| 4249043 | Electret transducer backplate, electret transducer and method of making an electret transducer | John K. Williams, Ronald Else | 1981-02-03 |