US2646651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic roll grinder
Assignee: Blaw Knox Co
•
Filing: 1949-02-15
•
Granted: 1953-07-28
•
Expires: 1969-02-15
Abstract
No abstract record available.
Inventors
- 👤 Bert A Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:45
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/02; B24B5/16; B24B5/162; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/303416
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1419073A
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US957978A
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US1633557A
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US1953029A
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US2132941A
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CH209696A
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US2294872A
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US2246476A
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US2475791A
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US2397178A
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US2411391A
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US2436373A
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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) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |