Patent US2931956A successfully refreshed from Google Patents.
US2931956A
Expired / Lapsed
US
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Regenerative radio receiver for remotely controlled relay
Assignee: Elliott and Evans Inc
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Filing: 1956-02-06
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Granted: 1960-04-05
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Expires: 1976-02-06
Abstract
No abstract record available.
Inventors
- 👤 Lewis H Van Arsdale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:39
CPC Classifications
G; G08; G08C; G08C19/00; G08C19/12; E; E05; E05F; E05F15/00; E05F15/70; E05F15/77; H; H03; H03D; H03D11/00; H03D11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2410768A
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US2584132A
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US2398214A
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US2581456A
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US2654002A
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GB723061A
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US2760009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |