US2467742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal bowl with reciprocating valve for separating sludgecontaining liquids
Assignee: De Laval Separator Co
•
Filing: 1944-05-20
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Granted: 1949-04-19
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Expires: 1964-05-20
Abstract
No abstract record available.
Inventors
- 👤 Hanno Tore Verner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:56
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/10; B04B1/14; B04B1/16; B04B1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE22085C
Cited
US1635482A
Cited
US1921181A
Cited
US2091329A
Cited
US2022815A
Cited
US2087727A
Cited
GB451251A
Cited
US2126864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |