Patent US2510150A successfully refreshed from Google Patents.
US2510150A
Expired / Lapsed
US
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Variable capacity reciprocating pump
Assignee: HYDRAULIC EQUIPMENT Co
•
Filing: 1945-02-01
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Granted: 1950-06-06
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Expires: 1965-02-01
Abstract
No abstract record available.
Inventors
- 👤 William T Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:44
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US753530A
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US661784A
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US740771A
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US833457A
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US893851A
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US1396494A
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US1680536A
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US1781404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-05 | 1953-12-05 | 1954-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-05 | 1957-12-05 | 1958-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-05 | 1961-12-05 | 1962-06-06 | $7700.00 | Window Closed / Lapsed |