Patent US2468632A successfully refreshed from Google Patents.
US2468632A
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US
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Centrifugal separator bowl valve
Assignee: International Motors LLC
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Filing: 1946-06-24
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Granted: 1949-04-26
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Expires: 1966-06-24
Abstract
No abstract record available.
Inventors
- 👤 Arnold E W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:49
CPC Classifications
B; B04; B04B; B04B15/00; B04B15/06; B04B1/00; B04B1/04; B04B1/08; B04B11/00; B04B11/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US528690A
Cited
US802724A
Cited
GB191223115A
Cited
US1751982A
Cited
US2173579A
Cited
US2173580A
Cited
US2256316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-25 | 1952-10-25 | 1953-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-25 | 1956-10-25 | 1957-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-25 | 1960-10-25 | 1961-04-26 | $7700.00 | Window Closed / Lapsed |