US2647240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio-frequency transmission line switching system
Assignee: United States, WAR, Secretary of
•
Filing: 1946-02-05
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Granted: 1953-07-28
•
Expires: 1966-02-05
Abstract
No abstract record available.
Inventors
- 👤 Todd William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:04
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/10; H01P1/14; G; G01; G01S; G01S7/00; G01S7/02; G01S7/03; G01S7/034; H01J; H01J17/00; H01J17/02; H01J17/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2140003A
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US1933976A
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US1966216A
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US2203882A
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US2189549A
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US2284101A
Cited
US2408425A
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US2405843A
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US2412161A
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US2505534A
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US2442304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |