Patent US2909330A successfully refreshed from Google Patents.
US2909330A
Expired / Lapsed
US
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Pulverizing mill and process of pulverizing material
Assignee: Individual
•
Filing: 1954-09-30
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Granted: 1959-10-20
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Expires: 1974-09-30
Abstract
No abstract record available.
Inventors
- 👤 Hardinge Harlowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:33
CPC Classifications
B; B02; B02C; B02C15/00; B02C15/04; B02C15/12; B02C2015/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2021895A
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US1961811A
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US1889555A
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US2205632A
Cited
US2377307A
Cited
US2610802A
Cited
US2630975A
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Cited
US2684813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |