US2923172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-speed clutched drive system with speed regulation
Assignee: International Business Machines Corp
•
Filing: 1959-02-06
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Granted: 1960-02-02
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Expires: 1979-02-06
Abstract
No abstract record available.
Inventors
- 👤 Howard W Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:27
CPC Classifications
F; F16; F16H; F16H37/00; F16H2700/00; F16H2700/02; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19051; Y10T74/19056; Y10T74/19628; Y10T74/19633
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) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |