US2964654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical switching circuit
Assignee: Individual
•
Filing: 1957-03-29
•
Granted: 1960-12-13
•
Expires: 1977-03-29
Abstract
No abstract record available.
Inventors
- 👤 Abraham George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:01
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/35
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2644892A
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US2774890A
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US2778956A
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US2795762A
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US2820145A
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US2863056A
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US2889467A
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US2852677A
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US2895109A
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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) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |