US2646935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple roll mill with means for spacing the rolls while being rotatively driven
Assignee: Charles Ross and Son Co
•
Filing: 1949-10-28
•
Granted: 1953-07-28
•
Expires: 1969-10-28
Abstract
No abstract record available.
Inventors
- 👤 Marley G Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:38
CPC Classifications
B; B02; B02C; B02C4/00; B02C4/28; B02C4/32; B02C4/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US275543A
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US342838A
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US453812A
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US1321801A
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US946107A
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US1359357A
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US1671356A
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US1699641A
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US1867184A
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US1977098A
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US2199340A
Cited
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 |