Patent US2987720A successfully refreshed from Google Patents.
US2987720A
Expired / Lapsed
US
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Double pulse length radar
Assignee: Individual
•
Filing: 1950-12-05
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Granted: 1961-06-06
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Expires: 1970-12-05
Abstract
No abstract record available.
Inventors
- 👤 Katzin Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:13
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10; G01S13/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2176469A
Cited
US2423082A
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US2423024A
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US2424984A
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US2425600A
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US2568441A
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US2946050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |