US2562560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for centrifugal pulverizing and separating
Assignee: Individual
•
Filing: 1946-01-18
•
Granted: 1951-07-31
•
Expires: 1966-01-18
Abstract
No abstract record available.
Inventors
- 👤 John H Macartney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:39
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/20; B02C13/205; B02C19/00; B02C19/0012; B02C19/005
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) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |