Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5555592 | Paint-can channel cleaner and recycler | — | 1996-09-17 |
| 5272448 | Method and apparatus to perform digital demodulation by measuring periods between zero crossings | Mark D. Hedstrom, Robert B. Porter | 1993-12-21 |
| 5239273 | Digital demodualtor using signal processor to evaluate period measurements | Mark D. Hedstrom, Robert B. Porter | 1993-08-24 |
| 5159281 | Digital demodulator using numerical processor to evaluate period measurements | Mark D. Hedstrom, Robert B. Porter | 1992-10-27 |