US2786547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal separator
Assignee: Universal Oil Products Co
•
Filing: 1954-04-19
•
Granted: 1957-03-26
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Expires: 1974-04-19
Abstract
No abstract record available.
Inventors
- 👤 Daniel E Mccartney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:16
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/02; B04C5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US297436A
Cited
US567021A
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US1031862A
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US992531A
Cited
US1958577A
Cited
US2295101A
Cited
US2300129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |