Patent US2650033A successfully refreshed from Google Patents.
US2650033A
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Method and apparatus for vibratory grinding
Assignee: FLSmidth and Co AS
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Filing: 1949-06-09
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Granted: 1953-08-25
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Expires: 1969-06-09
Abstract
No abstract record available.
Inventors
- 👤 Ahlmann Nikolai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:44
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US569828A
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US706102A
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FR490845A
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US1491601A
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US1951823A
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US2170768A
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US2248526A
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US2209344A
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CH251956A
Cited
US2460484A
Cited
US2540358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |