US2545238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radial vane pump
Assignee: HPM Development Corp
•
Filing: 1944-08-07
•
Granted: 1951-03-13
•
Expires: 1964-08-07
Abstract
No abstract record available.
Inventors
- 👤 Norman F Macmillin
- 👤 Howard M Purcell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:15
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F01C21/0818; F01C21/0854; F01C21/0863
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US983754A
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FR524897A
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GB166871A
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US1603437A
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US1819867A
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CH132994A
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US1805063A
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US1807392A
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FR722961A
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US2159941A
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US2149337A
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US2137708A
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US2335284A
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US2356916A
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US2354076A
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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) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |