US2811925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for transmitting pressure and pumping fluids
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-02-24
•
Granted: 1957-11-05
•
Expires: 1974-02-24
Abstract
No abstract record available.
Inventors
- 👤 Robert R Crookston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:52
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/08; F04B43/10; F04B43/107; F04B1/00; F04B1/02; F04B11/00; F04B11/0008; F04B11/0016; F04B15/00; F04B15/02; F04B43/02; F04B43/028; F04B43/086; F16; F16J; F16J3/00; F16J3/04; F16J3/041; Y; Y10; Y10S; Y10S417/00; Y10S417/90; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7782; Y10T137/7837; Y10T137/7838
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US900357A
Cited
US1790206A
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US1782144A
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US1927587A
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US2356738A
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US2543585A
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US2506434A
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US2563257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |