Patent US4845952A successfully refreshed from Google Patents.
Patent US2905908A successfully refreshed from Google Patents.
US2905908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waveguide switch and electrical control means thereof
Assignee: Collins Radio Co
•
Filing: 1954-09-16
•
Granted: 1959-09-22
•
Expires: 1974-09-16
Abstract
No abstract record available.
Inventors
- 👤 Donald L Holzschuh
- 👤 Charles A Kurka
- 👤 Edwin N Phillips
- 👤 Royal A Streeter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:41
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/10; H01P1/12; H01P1/122
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2344780A
Cited
US2413298A
Cited
US2400765A
Cited
US2423130A
Cited
US2484822A
Cited
US2472783A
Cited
US2597607A
Cited
US2556869A
Cited
US2573313A
Cited
US2697767A
Cited
GB730219A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |