Patent US1860929A successfully refreshed from Google Patents.
US1860929A
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Controlling mechanism for engines
Assignee: Bethlehem Steel Corp
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Filing: 1929-06-19
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Granted: 1932-05-31
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Expires: 1949-06-19
Abstract
No abstract record available.
Inventors
- 👤 Clarence H Froelich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:12
CPC Classifications
F; F01; F01B; F01B25/00; F01B2250/00; F01B2250/002; Y; Y10; Y10S; Y10S137/00; Y10S137/901; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86928; Y10T137/86936; Y10T137/86944; Y10T137/86952; Y10T137/86984; Y10T137/87096; Y10T137/87113; Y10T137/87265; Y10T137/87539; Y10T137/877; Y10T137/87788; Y10T137/8782
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1935-05-31 | 1935-11-30 | 1936-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-05-31 | 1939-11-30 | 1940-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-05-31 | 1943-11-30 | 1944-05-31 | $7700.00 | Window Closed / Lapsed |