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US1427692A
Expired / Lapsed
US
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Internal-combustion rotary engine
Assignee: Individual
•
Filing: 1919-09-26
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Granted: 1922-08-29
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Expires: 1939-09-26
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Mahon
- 👤 Julius P Burnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:35
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/30; F01C1/34; F01C1/344; F01C1/3441; F01C1/3442; 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) | 1925-08-28 | 1926-02-27 | 1926-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-08-28 | 1930-02-27 | 1930-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-08-28 | 1934-02-27 | 1934-08-29 | $7700.00 | Window Closed / Lapsed |