US2437115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanically actuated hydraulic control system for pump control
Assignee: HPM Development Corp
•
Filing: 1943-11-11
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Granted: 1948-03-02
•
Expires: 1963-11-11
Abstract
No abstract record available.
Inventors
- 👤 Johan A Muller
- 👤 Warren R Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:31
CPC Classifications
F; F15; F15B; F15B7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US153784A
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US260398A
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US2192778A
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US717136A
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US2110593A
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US2139101A
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US2366388A
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US2391996A
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US2363760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-02 | 1951-09-01 | 1952-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-02 | 1955-09-01 | 1956-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-02 | 1959-09-01 | 1960-03-02 | $7700.00 | Window Closed / Lapsed |