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US2972047A
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US
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Transmitter-receiver
Assignee: General Dynamics Corp
•
Filing: 1955-11-21
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Granted: 1961-02-14
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Expires: 1975-11-21
Abstract
No abstract record available.
Inventors
- 👤 Robert V Werner
- 👤 Robert C Weaver
- 👤 Jr James W Crooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:29
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/14; H04B7/15; H04B7/155; H04B7/15528; H04B7/15542
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2028866A
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US2144836A
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US2148532A
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US2544255A
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US2412935A
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US2507139A
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US2408826A
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US2570758A
Cited
US2777054A
Cited
US2748284A
Cited
US2820138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-14 | 1964-08-15 | 1965-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-14 | 1968-08-15 | 1969-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-14 | 1972-08-15 | 1973-02-14 | $7700.00 | Window Closed / Lapsed |