US2465526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump sealing means
Assignee: DANIEL AND FLORENCE GUGGENHEIM
•
Filing: 1946-02-14
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Granted: 1949-03-29
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Expires: 1966-02-14
Abstract
No abstract record available.
Inventors
- 👤 Esther C Goddard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:34
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/44; F02K9/46; F02K9/48; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/14; F04D29/146; 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) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |