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US2982062A
Expired / Lapsed
US
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Method for grinding gyratory crusher wearing parts
Assignee: Nordberg Manufacturing Co
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Filing: 1957-04-02
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Granted: 1961-05-02
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Expires: 1977-04-02
Abstract
No abstract record available.
Inventors
- 👤 Willard C Jackson
- 👤 Walter E Ruehmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:38
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/02; B24B5/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US810903A
Cited
US2332421A
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US2476505A
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US2542778A
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US2548277A
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US2778163A
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 |