US2628786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moving-fluid-stream pulverizing apparatus with screened discharge
Assignee: Celanese Corp
•
Filing: 1948-08-25
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Granted: 1953-02-17
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Expires: 1968-08-25
Abstract
No abstract record available.
Inventors
- 👤 Rene P Piperoux
- 👤 David B Hertz
- 👤 William P Moeller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:30
CPC Classifications
B; B02; B02C; B02C23/00; B02C19/00; B02C19/06; B02C19/061
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1938378A
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US1893913A
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US2032827A
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US2155697A
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US2257907A
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US2362351A
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US2402203A
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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) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |