US1854571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil and temperature controlled ignition cttt-otjt
Assignee: —
•
Filing: —
•
Granted: 1932-04-19
•
Expires: 1949-04-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:29
CPC Classifications
F; F01; F01M; F01M1/00; F01M1/18; F01M1/20; F01M1/22; F01M1/26; F02; F02P; F02P5/00; F02P5/04; F02P5/05; F02P5/10; F02P5/12
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) | 1935-04-19 | 1935-10-19 | 1936-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-04-19 | 1939-10-19 | 1940-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-04-19 | 1943-10-19 | 1944-04-19 | $7700.00 | Window Closed / Lapsed |