Patent US2977794A successfully refreshed from Google Patents.
US2977794A
Expired / Lapsed
US
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Marine speedometer
Assignee: Airguide Instrument Co
•
Filing: 1956-02-23
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Granted: 1961-04-04
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Expires: 1976-02-23
Abstract
No abstract record available.
Inventors
- 👤 Howard S Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:38
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/14; G01P5/16; G01P5/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1989332A
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US2442722A
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US2362298A
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US2524747A
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US2534123A
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US2642743A
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US2627181A
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US2628501A
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US2729243A
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FR1070471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |