US2840786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coaxial switch
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1952-01-19
•
Granted: 1958-06-24
•
Expires: 1972-01-19
Abstract
No abstract record available.
Inventors
- 👤 Carl F Schunemann
- 👤 Theodore R Thoren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:22
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/10; H01P1/12; H01P1/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2066802A
Cited
US2546976A
Cited
US2401863A
Cited
US2358499A
Cited
US2427940A
Cited
US2488419A
Cited
US2565643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |