US2647256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radar system
Assignee: STIN
•
Filing: 1949-06-21
•
Granted: 1953-07-28
•
Expires: 1969-06-21
Abstract
No abstract record available.
Inventors
- 👤 Heilpern Walter Gerhard
- 👤 Vogt Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:27
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/024; G01S7/025; G01S13/00; G01S13/74; G01S13/75; G01S13/751; H; H01; H01Q; H01Q21/00; H01Q21/0006; H01Q21/0037; H01Q21/0043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2412631A
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US2423644A
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US2461005A
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US2473613A
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US2421028A
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US2408848A
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US2508571A
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US2530098A
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US2472212A
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US2502394A
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US2472782A
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US2588249A
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 |