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US2139055A
Expired / Lapsed
US
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High frequency system having remote control
Assignee: RCA Corp
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Filing: 1936-01-11
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Granted: 1938-12-06
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Expires: 1956-01-11
Abstract
No abstract record available.
Inventors
- 👤 Wright George Maurice
- 👤 Rust Noel Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:02
CPC Classifications
H; H03; H03J; H03J9/00; H03J9/002; H03D; H03D7/00; H03D7/06; H03D7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-12-05 | 1942-06-06 | 1942-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-12-05 | 1946-06-06 | 1946-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-12-05 | 1950-06-06 | 1950-12-06 | $7700.00 | Window Closed / Lapsed |