US2557896A
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Control for change-speed mechanisms
Assignee: Niles Bement Pond Co
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Filing: 1948-06-29
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Granted: 1951-06-19
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Expires: 1968-06-29
Abstract
No abstract record available.
Inventors
- 👤 Harold B Soule
- 👤 Gordon W Smithson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:55
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/02; B23Q5/04; B23Q5/12; B23Q5/14; B23Q5/145; Y; Y10; Y10S; Y10S82/00; Y10S82/905; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18072; Y10T74/1808; Y10T74/19; Y10T74/19219; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19423; Y10T74/19428; Y10T74/19433; Y10T74/19437
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) | 1954-06-18 | 1954-12-18 | 1955-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-18 | 1958-12-18 | 1959-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-18 | 1962-12-18 | 1963-06-19 | $7700.00 | Window Closed / Lapsed |