US2743874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk type grinding apparatus for fibrous materials
Assignee: Individual
•
Filing: 1952-07-19
•
Granted: 1956-05-01
•
Expires: 1972-07-19
Abstract
No abstract record available.
Inventors
- 👤 Asplund Arne Johan Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:37
CPC Classifications
B; B02; B02C; B02C7/00; B02C7/11; B02C7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US332234A
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US614316A
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US2101442A
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US2338198A
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US1146030A
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US1146033A
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US1570456A
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US2079882A
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US2156320A
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US2182900A
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US2377307A
Cited
FR1010257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |