US2934703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency measuring apparatus
Assignee: RCA Corp
•
Filing: 1955-03-02
•
Granted: 1960-04-26
•
Expires: 1975-03-02
Abstract
No abstract record available.
Inventors
- 👤 Robert M Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:30
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/4802; G01P3/4807
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1929259A
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US2108014A
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US2249420A
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US2221591A
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US2335247A
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US2451404A
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US2525046A
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US2559849A
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US2598874A
Cited
US2668944A
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US2751553A
Cited
US2848564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |