US2816533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pump system
Assignee: Individual
•
Filing: 1952-11-08
•
Granted: 1957-12-17
•
Expires: 1972-11-08
Abstract
No abstract record available.
Inventors
- 👤 Reggio Ferdinando Carlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:33
CPC Classifications
F; F01; F01L; F01L9/00; F01L9/10; F01L9/11; F01L1/00; F01L1/34; F01L1/344; F01L1/3442; F01L2001/34423; F01L2001/34446; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/86115
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1816157A
Cited
US1864860A
Cited
US2223590A
Cited
US2041468A
Cited
US2138849A
Cited
US2291939A
Cited
US2391221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |