US2500719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Main and auxiliary pumps for impure liquid
Assignee: EQUI FLOW Inc
•
Filing: 1944-11-01
•
Granted: 1950-03-14
•
Expires: 1964-11-01
Abstract
No abstract record available.
Inventors
- 👤 Gustave A Ungar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:53
CPC Classifications
F; F04; F04C; F04C13/00; F04C13/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US350362A
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US1561364A
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US1709580A
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US1727703A
Cited
US1999163A
Cited
US2062035A
Cited
US2163464A
Cited
US2190670A
Cited
GB521031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |