Patent US3186648A successfully refreshed from Google Patents.
US3186648A
Expired / Lapsed
US
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Fluid energy mill
Assignee: WR Grace and Co
•
Filing: 1963-05-27
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Granted: 1965-06-01
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Expires: 1983-05-27
Abstract
No abstract record available.
Inventors
- 👤 Richard M Mandle
- 👤 Thomas O Tongue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:34
CPC Classifications
B; B02; B02C; B02C19/00; B02C19/06; B02C19/065; Y; Y10; Y10S; Y10S55/00; Y10S55/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US238044A
Cited
US1058313A
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US2412586A
Cited
FR986566A
Cited
US2885154A
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US2914391A
Cited
US2833482A
Cited
US3168253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |