US2547055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manually operated reciprocating pump
Assignee: HYDRAULIC EQUIPMENT Co
•
Filing: 1945-05-19
•
Granted: 1951-04-03
•
Expires: 1965-05-19
Abstract
No abstract record available.
Inventors
- 👤 William T Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:21
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/14; F04B53/00; F04B53/10; F04B53/12; F04B53/125; F04B53/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1212757A
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US1539556A
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US2243648A
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US2348412A
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US2362139A
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US2364511A
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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) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |