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US813815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary engine.
Assignee: Liberty Manufacturing Co
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Filing: —
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Granted: 1906-02-27
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Expires: 1923-02-27
Abstract
No abstract record available.
Inventors
- 👤 Ross S Mcintosh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:21
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F01C21/0818; F01C21/0827; F01C21/0836
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) | 1909-02-26 | 1909-08-28 | 1910-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-02-26 | 1913-08-28 | 1914-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-02-26 | 1917-08-28 | 1918-02-27 | $7700.00 | Window Closed / Lapsed |