US1363389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary engine
Assignee: CHARLOTTA BRAUER
•
Filing: 1918-04-03
•
Granted: 1920-12-28
•
Expires: 1938-04-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:24
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/30; F01C1/34; F01C1/344
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1923-12-28 | 1924-06-28 | 1924-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-12-28 | 1928-06-28 | 1928-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-12-28 | 1932-06-28 | 1932-12-28 | $7700.00 | Window Closed / Lapsed |