US2668658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuge machine
Assignee: Merco Centrifugal Co
•
Filing: 1950-03-08
•
Granted: 1954-02-09
•
Expires: 1970-03-08
Abstract
No abstract record available.
Inventors
- 👤 Sr Albert Peltzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:43
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/10; B04B1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2060239A
Cited
US1923454A
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US1847751A
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US1945786A
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US2013668A
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US2534210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |