Patent US2780944A successfully refreshed from Google Patents.
US2780944A
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US
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Reversible drive for power tools
Assignee: Supreme Products Corp
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Filing: 1954-02-26
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Granted: 1957-02-12
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Expires: 1974-02-26
Abstract
No abstract record available.
Inventors
- 👤 Elmer J Ondeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:58
CPC Classifications
B; B25; B25B; B25B23/00; B25B17/00; B25B21/00; B25B21/007; F; F16; F16H; F16H61/00; F16H61/02; F16H61/0293; F16H2716/00; F16H2716/02; Y; Y10; Y10T; Y10T408/00; Y10T408/65
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-12 | 1960-08-13 | 1961-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-12 | 1964-08-13 | 1965-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-12 | 1968-08-13 | 1969-02-12 | $7700.00 | Window Closed / Lapsed |