US2646503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced sweep circuit
Assignee: United States Department of the Navy
•
Filing: 1945-11-29
•
Granted: 1953-07-21
•
Expires: 1965-11-29
Abstract
No abstract record available.
Inventors
- 👤 David F Winter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:06
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/86
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2118352A
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US2254344A
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US2105902A
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US2227076A
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US2368448A
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US2345668A
Cited
US2522957A
Cited
US2444782A
Cited
US2467793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |