Patent US2498451A successfully refreshed from Google Patents.
US2498451A
Expired / Lapsed
US
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Fluid power unit
Assignee: Individual
•
Filing: 1944-04-10
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Granted: 1950-02-21
•
Expires: 1964-04-10
Abstract
No abstract record available.
Inventors
- 👤 Zorro D Ruben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:25
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/0032; F01B3/0082; F01B3/0085; F01B3/0088; F01B3/10; F01B3/103; F01B3/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1822064A
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US1826525A
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US1945391A
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US1938735A
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US2071672A
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US2138194A
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US2161143A
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US2188035A
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US2236237A
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US2345446A
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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) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |