US2477528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable-speed hand tool
Assignee: RICHARD RONNE
•
Filing: 1946-12-31
•
Granted: 1949-07-26
•
Expires: 1966-12-31
Abstract
No abstract record available.
Inventors
- 👤 Charles D Shrader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:16
CPC Classifications
B; B25; B25B; B25B15/00; B25B17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US531382A
Cited
US626884A
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US919156A
Cited
US1297439A
Cited
US1438227A
Cited
US1815032A
Cited
US1762515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |