US2864002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor detector
Assignee: AT&T Inc
•
Filing: 1953-09-16
•
Granted: 1958-12-09
•
Expires: 1973-09-16
Abstract
No abstract record available.
Inventors
- 👤 Harold M Straube
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:00
CPC Classifications
H; H03; H03D; H03D1/00; H03D1/14; H03D1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2086465A
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US2517960A
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US2585078A
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US2660624A
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US2662976A
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US2647958A
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US2652460A
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US2579336A
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US2595208A
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US2594449A
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US2622211A
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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) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |