US2830628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-speed drive for band saws and the like
Assignee: Rockwell Manufacturing Co
•
Filing: 1955-02-28
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Granted: 1958-04-15
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Expires: 1975-02-28
Abstract
No abstract record available.
Inventors
- 👤 David D Pettigrew
- 👤 Yih O Tu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:30
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/02; B23Q5/04; B23Q5/12; B23Q5/14; B23D; B23D55/00; B23D55/06; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19442; Y10T74/19447; Y10T74/19451; Y10T74/19456; Y10T83/00; Y10T83/707; Y10T83/869; Y10T83/8759
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE519481C
Cited
US761905A
Cited
US992044A
Cited
US2320713A
Cited
US2407772A
Cited
US2627288A
Cited
US2695637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |