US2525106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic keyer for direct current restoration
Assignee: RCA Corp
•
Filing: 1946-11-21
•
Granted: 1950-10-10
•
Expires: 1966-11-21
Abstract
No abstract record available.
Inventors
- 👤 Karl R Wendt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:03
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/14; H04N5/16; H04N5/18; H04N5/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR847676A
Cited
GB512109A
Cited
US2258732A
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US2303909A
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US2286450A
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FR868498A
Cited
US2240420A
Cited
US2299945A
Cited
US2358545A
Cited
US2363813A
Cited
US2389025A
Cited
US2445040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |