US3365546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microphone bias supply for eliminating or reducing key clicks
Assignee: Collins Radio Co
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Filing: 1965-05-14
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Granted: 1968-01-23
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Expires: 1985-05-14
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Kemper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:21
CPC Classifications
H; H03; H03G; H03G11/00; H03G11/08; H03G11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-22 | 1971-07-24 | 1972-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-22 | 1975-07-24 | 1976-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-22 | 1979-07-24 | 1980-01-23 | $7700.00 | Window Closed / Lapsed |