US2424972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmitter control circuit
Assignee: STC PLC
•
Filing: 1945-04-02
•
Granted: 1947-08-05
•
Expires: 1965-04-02
Abstract
No abstract record available.
Inventors
- 👤 Dubin Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:52
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1849632A
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US1888065A
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US1961206A
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US2115858A
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US2190037A
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US2226366A
Cited
US2236985A
Cited
US2342286A
Cited
US2379694A
Cited
GB554468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-04 | 1951-02-03 | 1951-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-04 | 1955-02-03 | 1955-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-04 | 1959-02-03 | 1959-08-05 | $7700.00 | Window Closed / Lapsed |