US2593294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal separating apparatus
Assignee: Individual
•
Filing: 1947-07-21
•
Granted: 1952-04-15
•
Expires: 1967-07-21
Abstract
No abstract record available.
Inventors
- 👤 Robert J Goldberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:32
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/12; B01D45/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US945592A
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US1004760A
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US1067766A
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US1339211A
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US1527069A
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US1712184A
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US1785918A
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US1941449A
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US2091329A
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US2199849A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |