Patent US2810305A successfully refreshed from Google Patents.
US2810305A
Expired / Lapsed
US
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Multi-speed power unit
Assignee: Illinois Tool Works Inc
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Filing: 1956-04-27
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Granted: 1957-10-22
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Expires: 1976-04-27
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Brinza
- 👤 James T Gates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:22
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/003; H; H02; H02K; H02K7/00; H02K7/10; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19172; Y10T74/19642; Y10T74/19688
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) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |