US2652488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Squelch circuit
Assignee: Bendix Aviation Corp
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Filing: 1950-12-29
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Granted: 1953-09-15
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Expires: 1970-12-29
Abstract
No abstract record available.
Inventors
- 👤 Raymond F Smeltzer
- 👤 Robert B Edwards
- 👤 Jr Rollo C Baker
- 👤 Samuel D Burton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:05
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/22; H03G3/26; H03G3/28
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) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |