Patent US2793537A successfully refreshed from Google Patents.
US2793537A
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Two speed drive
Assignee: Rexnord Industries LLC
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Filing: 1954-06-02
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Granted: 1957-05-28
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Expires: 1974-06-02
Abstract
No abstract record available.
Inventors
- 👤 Walter P Schmitter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:59
CPC Classifications
D; D06; D06F; D06F37/00; D06F37/30; D06F37/36; F; F16; F16H; F16H3/00; F16H3/02; F16H3/08; F16H2714/00; F16H2714/02; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19228; Y10T74/19251; Y10T74/19256; Y10T74/1926; Y10T74/19642; Y10T74/19679
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) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |