Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5309125 | Compact delay line formed of concentrically stacked, helically grooved, cylindrical channel-line structure | Gilbert R. Perkins | 1994-05-03 |
DH
Douglas E. Heckaman
Overall (1994): #141,258 of 165,921Top 90%
1
Patents 1994