Patent US2557933A successfully refreshed from Google Patents.
US2557933A
Expired / Lapsed
US
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Main and starting engine with gear and hydraulic accessory drive system
Assignee: Individual
•
Filing: 1946-09-23
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Granted: 1951-06-26
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Expires: 1966-09-23
Abstract
No abstract record available.
Inventors
- 👤 Beaman Bernard
- 👤 Robert A Stein
- 👤 Hulman Julius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:26
CPC Classifications
F; F02; F02N; F02N7/00; F02N7/10; F02N7/14; F02N15/00; F02N15/02; F02N15/022; F02N15/023; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19037
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2195139A
Cited
US2349334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-25 | 1954-12-25 | 1955-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-25 | 1958-12-25 | 1959-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-25 | 1962-12-25 | 1963-06-26 | $7700.00 | Window Closed / Lapsed |