US1139696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine-engine.
Assignee: Individual
•
Filing: 1914-07-03
•
Granted: 1915-05-18
•
Expires: 1934-07-03
Abstract
No abstract record available.
Inventors
- 👤 Erastus M Maxwell
- 👤 James F Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:00
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/42; F23R3/50
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) | 1918-05-17 | 1918-11-16 | 1919-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-05-17 | 1922-11-16 | 1923-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-05-17 | 1926-11-16 | 1927-05-18 | $7700.00 | Window Closed / Lapsed |