US2550849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary engine
Assignee: Individual
•
Filing: 1948-11-12
•
Granted: 1951-05-01
•
Expires: 1968-11-12
Abstract
No abstract record available.
Inventors
- 👤 Octavius J Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:12
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/30; F01C1/34; F01C1/356; F01C1/3562; F02; F02B; F02B53/00; F02B2730/00; F02B2730/01; F02B2730/011; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US832848A
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US823228A
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US834675A
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US863809A
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US892346A
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US880333A
Cited
US988591A
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US1056833A
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US1348103A
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US1509051A
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US1771351A
Cited
US1916318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |