US1800929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary engine and the like
Assignee: Individual
•
Filing: 1928-05-03
•
Granted: 1931-04-14
•
Expires: 1948-05-03
Abstract
No abstract record available.
Inventors
- 👤 Craig John Frederick Nevinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:25
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/0032; F01B3/0041; F01B3/0044; F01B3/007; F01B3/0073; F01B3/0082; F01B3/0085; F01B3/0088; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18336
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) | 1934-04-13 | 1934-10-13 | 1935-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-04-13 | 1938-10-13 | 1939-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-04-13 | 1942-10-13 | 1943-04-14 | $7700.00 | Window Closed / Lapsed |