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Patent US2983867A successfully refreshed from Google Patents.
US2983867A
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Electrical speedometer
Assignee: Unisys Corp
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Filing: 1956-02-27
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Granted: 1961-05-09
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Expires: 1976-02-27
Abstract
No abstract record available.
Inventors
- 👤 Arthur B Sperry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:58
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/02; G01P5/06; G01P5/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US912291A
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US2522139A
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US2432327A
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US2514948A
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US2575494A
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US2755417A
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US2775724A
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US2772396A
Cited
US2803759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |