US3014431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding vane pump
Assignee: Shell USA Inc
•
Filing: 1959-07-13
•
Granted: 1961-12-26
•
Expires: 1979-07-13
Abstract
No abstract record available.
Inventors
- 👤 Hendrik K J Van Den Bussche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:22
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F01C21/0818; F01C21/0854; F01C21/0863
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2731919A
Cited
US674258A
Cited
US1898914A
Cited
FR689408A
Cited
US1992848A
Cited
US2216053A
Cited
US2545238A
Cited
US2612114A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-25 | 1965-06-26 | 1965-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-25 | 1969-06-26 | 1969-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-25 | 1973-06-26 | 1973-12-26 | $7700.00 | Window Closed / Lapsed |