Patent EP0520788A2 successfully refreshed from Google Patents.
US2845503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power means for driving a rotary shaft
Assignee: Individual
•
Filing: 1955-07-19
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Granted: 1958-07-29
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Expires: 1975-07-19
Abstract
No abstract record available.
Inventors
- 👤 Durand Francois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:46
CPC Classifications
G; G05; G05G; G05G15/00; G05G15/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1864348A
Cited
FR740286A
Cited
GB409383A
Cited
US1921296A
Cited
US2062804A
Cited
GB502382A
Cited
FR874884A
Cited
DE864183C
Cited
US2522451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |