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US2865504A
Expired / Lapsed
US
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Separating apparatus
Assignee: FLSmidth and Co AS
•
Filing: 1956-08-09
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Granted: 1958-12-23
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Expires: 1976-08-09
Abstract
No abstract record available.
Inventors
- 👤 Boleslaw J Zubrzycki
- 👤 Lewis Ronald Wilfred James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:10
CPC Classifications
B; B03; B03B; B03B4/00; B03B4/06; B03B4/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1223033A
Cited
US1362370A
Cited
US1841462A
Cited
US2160956A
Cited
US2586818A
Cited
US2769544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |