Patent US2804172A successfully refreshed from Google Patents.
US2804172A
Expired / Lapsed
US
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Soap deaeration
Assignee: Sharples Corp
•
Filing: 1951-07-10
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Granted: 1957-08-27
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Expires: 1971-07-10
Abstract
No abstract record available.
Inventors
- 👤 Sender Leopold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:30
CPC Classifications
C; C11; C11D; C11D13/00; C11D13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US558970A
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US2041059A
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US2204062A
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US2252313A
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US2283456A
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US2343317A
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US2355057A
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US2420356A
Cited
US2408021A
Cited
US2634907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |