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Patent US2982485A successfully refreshed from Google Patents.
US2982485A
Expired / Lapsed
US
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Gyratory ball mill
Assignee: Individual
•
Filing: 1958-09-08
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Granted: 1961-05-02
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Expires: 1978-09-08
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Fahrenwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:22
CPC Classifications
B; B02; B02C; B02C19/00; B02C19/11; B02C17/00; B02C17/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE260777C
Cited
US584086A
Cited
US849545A
Cited
US859118A
Cited
DE707525C
Cited
DE667333C
Cited
US2338398A
Cited
US2540358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |