Patent US2427284A successfully refreshed from Google Patents.
US2427284A
Expired / Lapsed
US
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Engine
Assignee: Individual
•
Filing: 1942-08-28
•
Granted: 1947-09-09
•
Expires: 1962-08-28
Abstract
No abstract record available.
Inventors
- 👤 Douglas L Jocelyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:01
CPC Classifications
F; F01; F01P; F01P5/00; F01P5/02; F02; F02B; F02B33/00; F02M; F02M2700/00; F02M2700/33
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE163087C
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US866654A
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US879392A
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US962233A
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US1371444A
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US1493242A
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GB193017A
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US1634931A
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US2046314A
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US2063477A
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US2119402A
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US2321097A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-08 | 1951-03-10 | 1951-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-08 | 1955-03-10 | 1955-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-08 | 1959-03-10 | 1959-09-09 | $7700.00 | Window Closed / Lapsed |