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US1654020A
Expired / Lapsed
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Increasing valve lifter for gas engines
Assignee: Individual
•
Filing: 1925-04-18
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Granted: 1927-12-27
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Expires: 1945-04-18
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Benjamin Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:45
CPC Classifications
F; F01; F01L; F01L13/00; F01L13/0015; F01L13/0021; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20558; Y10T74/2057
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) | 1930-12-26 | 1931-06-27 | 1931-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-12-26 | 1935-06-27 | 1935-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-12-26 | 1939-06-27 | 1939-12-27 | $7700.00 | Window Closed / Lapsed |