US2878713A
Expired / Lapsed
US
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Optical scanner for determining velocity-altitude
Assignee: Servo Corp of America
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Filing: 1955-01-07
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Granted: 1959-03-24
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Expires: 1975-01-07
Abstract
No abstract record available.
Inventors
- 👤 Blackstone Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:01
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/12; H01Q3/14; G; G01; G01C; G01C11/00; G01C11/02; G01C11/025; G01S; G01S11/00; G01S11/12; G01S17/00; G01S17/02; G01S17/50; G01S17/88; G01S17/89; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/20; G01S7/28; G01S7/2806; G01S7/285; G01S7/295; G02; G02B; G02B26/00; G02B26/08; G02B26/10; H04; H04N; H04N23/00; H04N23/10; H04N23/17; H04N3/00; H04N3/02; H04N3/08; H04N3/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |