US2948481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and apparatus for comminuting ores or the like
Assignee: Denver Equipment Co
•
Filing: 1955-06-30
•
Granted: 1960-08-09
•
Expires: 1975-06-30
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Daman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:28
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1194717A
Cited
US1272801A
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US1381987A
Cited
US1684366A
Cited
US2098054A
Cited
DE682447C
Cited
US2456073A
Cited
US2480085A
Cited
US2560972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |