Patent US2691346A successfully refreshed from Google Patents.
US2691346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double rotary fluid pump
Assignee: FE Myers and Bro Co
•
Filing: 1948-09-07
•
Granted: 1954-10-12
•
Expires: 1968-09-07
Abstract
No abstract record available.
Inventors
- 👤 William J Conery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:47
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/12; F04B; F04B1/00; F04B1/02; F04C; F04C11/00; F04C11/001; F04C11/005; F04C11/008
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE206674C
Cited
US517229A
Cited
US1438008A
Cited
US1910707A
Cited
US2028407A
Cited
GB382592A
Cited
US2196453A
Cited
US2354811A
Cited
US2466792A
Cited
US2603157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-11 | 1958-04-12 | 1958-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-11 | 1962-04-12 | 1962-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-11 | 1966-04-12 | 1966-10-12 | $7700.00 | Window Closed / Lapsed |