Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6191651 | Inductive output amplifier output cavity structure | — | 2001-02-20 |
| 5767625 | High frequency vacuum tube with closely spaced cathode and non-emissive grid | Andrew A. Haase | 1998-06-16 |
| 5572092 | High frequency vacuum tube with closely spaced cathode and non-emissive grid | — | 1996-11-05 |
| 4480210 | Gridded electron power tube | Donald H. Preist | 1984-10-30 |
| 4277718 | Modular electron tube with carbon grid | — | 1981-07-07 |