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Patent US2632865A successfully refreshed from Google Patents.
US2632865A
Expired / Lapsed
US
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Circular sweep circuit
Assignee: Individual
•
Filing: 1946-04-03
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Granted: 1953-03-24
•
Expires: 1966-04-03
Abstract
No abstract record available.
Inventors
- 👤 Everett B Hales
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:28
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2135171A
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US2313966A
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US2295615A
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US2423103A
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US2489296A
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US2408415A
Cited
US2457580A
Cited
US2426721A
Cited
US2513293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |