US2544072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary centrifugal pulverizer with intermeshing knives on rotor and stator
Assignee: LOLA MILLER
•
Filing: 1948-01-19
•
Granted: 1951-03-06
•
Expires: 1968-01-19
Abstract
No abstract record available.
Inventors
- 👤 Jr John Dutra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:57
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/06; B02C18/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |