US2600632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable capacity vane-type rotary pump including automatic means for maintaining uniform delivery
Assignee: Heil Co
•
Filing: 1945-11-14
•
Granted: 1952-06-17
•
Expires: 1965-11-14
Abstract
No abstract record available.
Inventors
- 👤 Henry C French
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:01
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/18; F04C14/22; F04C14/223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1467208A
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US1914267A
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US2062310A
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US2033920A
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US2142275A
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US2238061A
Cited
US2302922A
Cited
US2322568A
Cited
US2318292A
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US2407013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |