US2766631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power multiplying mechanism for portable hand tools
Assignee: ROTOR TOOL Co
•
Filing: 1950-06-09
•
Granted: 1956-10-16
•
Expires: 1970-06-09
Abstract
No abstract record available.
Inventors
- 👤 Paul R Van Sittert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:07
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/04; H01R43/042; H01R43/0427; B; B25; B25B; B25B27/00; B25B27/14; B25B27/146; B65; B65B; B65B13/00; B65B13/18; B65B13/24; B65B13/34; B65B13/345; F; F16; F16H; F16H25/00; F16H25/18; F16H25/183; G; G05; G05G; G05G7/00; G05G7/02; G05G7/04; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18992
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US378978A
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US860174A
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US1218771A
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US1720133A
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US2319231A
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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) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |