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US2864562A
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US
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Plural stage disc mill with back pressure control means for each stage
Assignee: Bauer Brothers Co
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Filing: 1953-05-20
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Granted: 1958-12-16
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Expires: 1973-05-20
Abstract
No abstract record available.
Inventors
- 👤 Lee E Eberhardt
- 👤 Maurice D Woodruff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:01
CPC Classifications
B; B02; B02C; B02C7/00; B02C7/02; B02C7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1807808A
Cited
CH122054A
Cited
US1624037A
Cited
US1814587A
Cited
US2323490A
Cited
US2260834A
Cited
US2591106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |