Patent US2467777A successfully refreshed from Google Patents.
US2467777A
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US
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Frequency measuring circuit
Assignee: RCA Corp
•
Filing: 1942-04-01
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Granted: 1949-04-19
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Expires: 1962-04-01
Abstract
No abstract record available.
Inventors
- 👤 Jan A Rajchman
- 👤 Edwin A Goldberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:07
CPC Classifications
G; G01; G01R; G01R23/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2161146A
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US2266401A
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US2272070A
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US2221591A
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US2307316A
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US2323596A
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US2405843A
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US2362503A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |