US2759153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio frequency electric switch
Assignee: GENERAL COMMUNICATION CO
•
Filing: 1950-06-22
•
Granted: 1956-08-14
•
Expires: 1970-06-22
Abstract
No abstract record available.
Inventors
- 👤 Randolph E Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:54
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)
FR876433A
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US2344780A
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US2426186A
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US2427940A
Cited
FR903385A
Cited
US2413298A
Cited
US2475647A
Cited
US2509217A
Cited
US2565643A
Cited
US2697767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |