Patent US20050004583A1 successfully refreshed from Google Patents.
US2922116A
Expired / Lapsed
US
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Volume-limiting amplifier
Assignee: Individual
•
Filing: 1955-09-19
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Granted: 1960-01-19
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Expires: 1975-09-19
Abstract
No abstract record available.
Inventors
- 👤 Murray G Crosby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:58
CPC Classifications
H; H03; H03G; H03G11/00; H03G11/004; H03G7/00; H03G7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2151921A
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US2111765A
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US2195290A
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US2258662A
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US2343471A
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US2379484A
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US2455332A
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US2723387A
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US2798947A
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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) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |