US2752854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically actuated diaphragm pump
Assignee: Individual
•
Filing: 1954-12-24
•
Granted: 1956-07-03
•
Expires: 1974-12-24
Abstract
No abstract record available.
Inventors
- 👤 William C Prior
- 👤 George R Ord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:00
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/02; F04B43/025; F04B43/026; F04B43/06; F04B43/067; G; G01; G01F; G01F3/00; G01F3/02; G01F3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |