US2186706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion engine and a method for the operation thereof
Assignee: Individual
•
Filing: 1934-11-14
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Granted: 1940-01-09
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Expires: 1954-11-14
Abstract
No abstract record available.
Inventors
- 👤 Martinka Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:48
CPC Classifications
F; F02; F02C; F02C3/00; F02C3/20; F02C3/30; F02C7/00; F02C7/12; F02C7/14; F02C7/141; F02C7/143
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) | 1943-01-08 | 1943-07-10 | 1944-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-01-08 | 1947-07-10 | 1948-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-01-08 | 1951-07-10 | 1952-01-09 | $7700.00 | Window Closed / Lapsed |