US2431570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible chamber motor with fluid actuated pilot controlled distributing valve
Assignee: Individual
•
Filing: 1943-12-27
•
Granted: 1947-11-25
•
Expires: 1963-12-27
Abstract
No abstract record available.
Inventors
- 👤 Marion E Landon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:51
CPC Classifications
F; F01; F01B; F01B17/00; F01B17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2253617A
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US1952690A
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US2056776A
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US2103001A
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US2165966A
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US2370376A
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US2191356A
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US2236665A
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US2386184A
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US2298457A
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US2302232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-24 | 1951-05-26 | 1951-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-24 | 1955-05-26 | 1955-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-24 | 1959-05-26 | 1959-11-25 | $7700.00 | Window Closed / Lapsed |