US2665897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gearless drive for speed and distance recording instruments
Assignee: FRANK Manufacturing Co Inc
•
Filing: 1951-03-19
•
Granted: 1954-01-12
•
Expires: 1971-03-19
Abstract
No abstract record available.
Inventors
- 👤 Mollenhour Delbert Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:26
CPC Classifications
G; G01; G01P; G01P1/00; G01P1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US321365A
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US441334A
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US613187A
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US1227517A
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US1634565A
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US1761833A
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US2041134A
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US2184488A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |