US2472167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency sensitive circuit
Assignee: RCA Corp
•
Filing: 1945-03-13
•
Granted: 1949-06-07
•
Expires: 1965-03-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Leslie E Matson
- 👤 Robert N Lesnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:56
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/121
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2093665A
Cited
US2088654A
Cited
US2233415A
Cited
US2206695A
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US2446567A
Cited
US2354141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |