US3050642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined squelch circuit and amplifier
Assignee: Collins Radio Co
•
Filing: 1959-08-03
•
Granted: 1962-08-21
•
Expires: 1979-08-03
Abstract
No abstract record available.
Inventors
- 👤 Robert H Rogers
- 👤 Robert C Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:52
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2706776A
Cited
US2704324A
Cited
US2888579A
Cited
US2914711A
Cited
US2829257A
Cited
US2888527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |