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US3530468A
Expired / Lapsed
US
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Triangulation radar system
Assignee: RCA Corp
•
Filing: 1968-02-23
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Granted: 1970-09-22
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Expires: 1988-02-23
Abstract
No abstract record available.
Inventors
- 👤 William J Hannan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:33
CPC Classifications
G; G01; G01S; G01S17/00; G01S17/02; G01S17/06; G01S17/46; G01S17/48; G01S17/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2763856A
Cited
US3181155A
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US3194966A
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US3290506A
Cited
US3356848A
Cited
US3360987A
Cited
US3352223A
Cited
US3317731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |