Patent US1149523A successfully refreshed from Google Patents.
US1149523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary engine.
Assignee: Individual
•
Filing: 1915-02-02
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Granted: 1915-08-10
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Expires: 1935-02-02
Abstract
No abstract record available.
Inventors
- 👤 John R Jerman Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:55
CPC Classifications
F; F01; F01D; F01D11/00; F01D11/08
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) | 1918-08-09 | 1919-02-08 | 1919-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-08-09 | 1923-02-08 | 1923-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-08-09 | 1927-02-08 | 1927-08-10 | $7700.00 | Window Closed / Lapsed |