Patent US2980353A successfully refreshed from Google Patents.
US2980353A
Expired / Lapsed
US
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High production grinding mill
Assignee: Morehouse Industries Inc
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Filing: 1958-06-25
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Granted: 1961-04-18
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Expires: 1978-06-25
Abstract
No abstract record available.
Inventors
- 👤 Donald J Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:23
CPC Classifications
B; B02; B02C; B02C7/00; B02C7/02; B02C7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US755989A
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US1185046A
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US1405878A
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US2059249A
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US2212883A
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US2243476A
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US2478937A
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US2626757A
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US2678170A
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US2838247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |