US745755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary-engine.
Assignee: Individual
•
Filing: 1903-03-21
•
Granted: 1903-12-01
•
Expires: 1923-03-21
Abstract
No abstract record available.
Inventors
- 👤 Herbert T Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:11
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/30; F01C1/34; F01C1/344; F01C1/3441; F01C1/3445; F01C1/3442; F01C20/00; F01C20/04; F02; F02B; F02B53/00
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) | 1906-11-30 | 1907-06-01 | 1907-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-11-30 | 1911-06-01 | 1911-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-11-30 | 1915-06-01 | 1915-12-01 | $7700.00 | Window Closed / Lapsed |