US2991017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding method in ball, tube and other mills
Assignee: INSINOORITOIMISTO ENGINEERING
•
Filing: 1958-04-17
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Granted: 1961-07-04
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Expires: 1978-04-17
Abstract
No abstract record available.
Inventors
- 👤 Hukki Risto Tapani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:44
CPC Classifications
B; B02; B02C; B02C17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1741604A
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US2269912A
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US2381351A
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US2633303A
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US2713976A
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US2833482A
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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) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |