US2533803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Audio controlled limiter
Assignee: Cornell Dubilier Electronics Inc
•
Filing: 1945-08-27
•
Granted: 1950-12-12
•
Expires: 1965-08-27
Abstract
No abstract record available.
Inventors
- 👤 Donald L Hings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:53
CPC Classifications
H; H03; H03G; H03G11/00; H03G11/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1950145A
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US1978552A
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US2031238A
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US2034497A
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US2116696A
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US2374071A
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US2319663A
Cited
GB492407A
Cited
US2264724A
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US2245674A
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US2284102A
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US2395770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |