Patent US2998946A successfully refreshed from Google Patents.
Patent US2475844A successfully refreshed from Google Patents.
US2475844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axially sliding vane rotary pump
Assignee: EATON PUMP Manufacturing Co Inc
•
Filing: 1945-05-09
•
Granted: 1949-07-12
•
Expires: 1965-05-09
Abstract
No abstract record available.
Inventors
- 👤 Jones Guy Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:36
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3448
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1952-07-11 | 1953-01-10 | 1953-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-11 | 1957-01-10 | 1957-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-11 | 1961-01-10 | 1961-07-12 | $7700.00 | Window Closed / Lapsed |