Patent US2428670A successfully refreshed from Google Patents.
US2428670A
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Centrifugal disk mill with adjustable impactor
Assignee: Safety Car Heating and Lighting Co
•
Filing: 1943-12-08
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Granted: 1947-10-07
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Expires: 1963-12-08
Abstract
No abstract record available.
Inventors
- 👤 George E Hulse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:55
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/14; B02C13/18; B02C13/1807; B02C13/1814
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US211316A
Cited
US250125A
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US273829A
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US310709A
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US316405A
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GB195443A
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DE372428C
Cited
US1752888A
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DE545336C
Cited
US1947953A
Cited
US2019013A
Cited
US2100020A
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US2199015A
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US2339737A
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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) | 1950-10-06 | 1951-04-07 | 1951-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-06 | 1955-04-07 | 1955-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-06 | 1959-04-07 | 1959-10-07 | $7700.00 | Window Closed / Lapsed |