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 15:52
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
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References Cited (Backward Citations)
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US517229A
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US2028407A
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GB382592A
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US2196453A
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US2354811A
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US2466792A
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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 |