US2586964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump
Assignee: Individual
•
Filing: 1946-09-24
•
Granted: 1952-02-26
•
Expires: 1966-09-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick Kraissl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:26
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3441; F04C2/3445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US462282A
Cited
US582696A
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US1043936A
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US1111160A
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US1265070A
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GB142858A
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US1553095A
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GB278382A
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US1737942A
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GB310580A
Cited
GB304574A
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FR722961A
Cited
GB404337A
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US2003615A
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US2036711A
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US2338609A
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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) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |