Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5379658 | Intrusive acoustic sensor mounting arrangement | Frederick L. Lichtenfels, II | 1995-01-10 |
| 5315563 | External sealed intrusive mounting arrangement for a fuel level sensor | Frederick L. Lichtenfels, II, Robert E. Birkett, Ward J. Nial | 1994-05-24 |
| 4904085 | Polarimetric fiber optic sensor testing apparatus | William B. Spillman Jr., Robert E. Rudd III | 1990-02-27 |