US2668910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cosine sweep circuit
Assignee: Individual
•
Filing: 1945-11-05
•
Granted: 1954-02-09
•
Expires: 1965-11-05
Abstract
No abstract record available.
Inventors
- 👤 Merle A Starr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:10
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/10; G01S7/16; H; H03; H03K; H03K4/00; H03K4/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1928093A
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US2078644A
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US2226459A
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US2174386A
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US2324314A
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US2412291A
Cited
US2498900A
Cited
US2399586A
Cited
US2400599A
Cited
US2580673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |