US2963155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for mineral classification and separation
Assignee: G G SANDERS
•
Filing: 1954-12-31
•
Granted: 1960-12-06
•
Expires: 1974-12-31
Abstract
No abstract record available.
Inventors
- 👤 Frank C Peterson
- 👤 Goodwin Norris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:54
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/02; B03B5/10; B03B5/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US906239A
Cited
US1378521A
Cited
US963519A
Cited
FR447290A
Cited
US1530889A
Cited
US2246084A
Cited
US2416450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |