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US2967449A
Expired / Lapsed
US
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Optical ground-speed meter
Assignee: Servo Corp of America
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Filing: 1955-01-06
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Granted: 1961-01-10
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Expires: 1975-01-06
Abstract
No abstract record available.
Inventors
- 👤 Weiss Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:35
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/64; G01P3/80; G01P3/806
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1946290A
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US2166991A
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US2292641A
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US2409672A
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US2439295A
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US2422135A
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US2626986A
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US2769492A
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US2866373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |