US2552246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermittent variable-speed drive mechanism
Assignee: Crown Cork and Seal Co Inc
•
Filing: 1945-10-18
•
Granted: 1951-05-08
•
Expires: 1965-10-18
Abstract
No abstract record available.
Inventors
- 👤 Eibe A Wilckens
- 👤 Ellis M Magill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:43
CPC Classifications
F; F16; F16H; F16H29/00; F16H29/02; B; B65; B65G; B65G23/00; B65G2811/00; B65G2811/09; B65G2811/095; B65G2811/096; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1503; Y10T74/1508; Y10T74/1518; Y10T74/1523; Y10T74/19; Y10T74/19555
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |