Patent US2919862A successfully refreshed from Google Patents.
US2919862A
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Process and apparatus for comminuting solid viscous substances, with a liquefied gas as a precooling agent
Assignee: Knapsack AG
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Filing: 1954-08-24
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Granted: 1960-01-05
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Expires: 1974-08-24
Abstract
No abstract record available.
Inventors
- 👤 Beike Hans
- 👤 Erberich Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:53
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/14; C10C3/16; B; B02; B02C; B02C19/00; B02C19/18; B02C19/186; B29; B29B; B29B13/00; B29B13/02; B29B13/021; B29B13/10; Y; Y10; Y10S; Y10S241/00; Y10S241/37
Claims Analysis
Total Claims: 0
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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) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |