Patent US2593510A successfully refreshed from Google Patents.
US2593510A
Expired / Lapsed
US
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Friction drive
Assignee: Individual
•
Filing: 1949-01-04
•
Granted: 1952-04-22
•
Expires: 1969-01-04
Abstract
No abstract record available.
Inventors
- 👤 Wildhaber Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:54
CPC Classifications
F; F16; F16H; F16H15/00; F16H15/02; F16H15/04; F16H15/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1257742A
Cited
US1868676A
Cited
GB375068A
Cited
US1963599A
Cited
US2089295A
Cited
US2216191A
Cited
US2123007A
Cited
US2233967A
Cited
GB593772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |