US2928350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vane displacement pumps or motors
Assignee: Individual
•
Filing: 1958-01-22
•
Granted: 1960-03-15
•
Expires: 1978-01-22
Abstract
No abstract record available.
Inventors
- 👤 Prendergast Charles Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:52
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/08; F01C21/0809
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB190119987A
Cited
US706158A
Cited
US1820009A
Cited
US1943929A
Cited
US1988213A
Cited
US2062310A
Cited
US2368789A
Cited
US2541197A
Cited
US2513446A
Cited
US2691482A
Cited
US2804016A
Cited
US2764941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |