US2524884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shear grinding mill with centrifugally positioned pestles
Assignee: Individual
•
Filing: 1947-06-03
•
Granted: 1950-10-10
•
Expires: 1967-06-03
Abstract
No abstract record available.
Inventors
- 👤 Ernest J Clerk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:08
CPC Classifications
B; B02; B02C; B02C19/00; B02C19/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US587641A
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US1306772A
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US1323461A
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FR355240A
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US885708A
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FR438002A
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US1119382A
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US1130251A
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US1449933A
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US1741573A
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US1916858A
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GB578396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |