US2747710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed drive
Assignee: Individual
•
Filing: 1950-08-30
•
Granted: 1956-05-29
•
Expires: 1970-08-30
Abstract
No abstract record available.
Inventors
- 👤 Edward W Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:50
CPC Classifications
F; F16; F16H; F16H35/00; F16D; F16D48/00; F16D48/06; F16D48/064; F16D2500/00; F16D2500/10; F16D2500/102; F16D2500/1021; F16D2500/1022; F16D2500/1028; F16D2500/104; F16D2500/10443; F16D2500/1045; F16D2500/70; F16D2500/704; F16D2500/70402; F16D2500/7041; F16D2500/7042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |