Patent US2425957A successfully refreshed from Google Patents.
US2425957A
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US
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Pumping system for evacuating containers of liquid
Assignee: Deming Co
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Filing: 1945-01-24
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Granted: 1947-08-19
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Expires: 1965-01-24
Abstract
No abstract record available.
Inventors
- 👤 Samelson Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:25
CPC Classifications
F; F04; F04D; F04D9/00; F04D9/007; F04D9/04; F04D9/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE236157C
Cited
US573611A
Cited
US1324572A
Cited
US979633A
Cited
US1341010A
Cited
FR523362A
Cited
US1800333A
Cited
US2218507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-18 | 1951-02-17 | 1951-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-18 | 1955-02-17 | 1955-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-18 | 1959-02-17 | 1959-08-19 | $7700.00 | Window Closed / Lapsed |