US2625650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superregenerative apparatus
Assignee: Unisys Corp
•
Filing: 1948-10-16
•
Granted: 1953-01-13
•
Expires: 1968-10-16
Abstract
No abstract record available.
Inventors
- 👤 Benjamin F Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:34
CPC Classifications
H; H03; H03D; H03D11/00; H03D11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2018569A
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US2125982A
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US2163403A
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US2303862A
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US2332102A
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US2416794A
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US2447375A
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US2505655A
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US2453243A
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US2459557A
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US2515225A
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US2486355A
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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) | 1956-01-13 | 1956-07-14 | 1957-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-13 | 1960-07-14 | 1961-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-13 | 1964-07-14 | 1965-01-13 | $7700.00 | Window Closed / Lapsed |