US2496711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumping apparatus for very cold liquids
Assignee: DANIEL AND FLORENCE GUGGENHEIM
•
Filing: 1946-11-02
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Granted: 1950-02-07
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Expires: 1966-11-02
Abstract
No abstract record available.
Inventors
- 👤 Esther C Goddard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:29
CPC Classifications
F; F04; F04B; F04B15/00; F04B15/06; F04B15/08; F04B43/00; F04B43/0009; F04B43/0054; F04B43/0063; F04B43/02; F04B43/06; F04B43/08; F04B43/10; Y; Y10; Y10S; Y10S60/00; Y10S60/915
Claims Analysis
Total Claims: 0
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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) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |