US2767844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Comminuted ore feed control
Assignee: Individual
•
Filing: 1952-11-15
•
Granted: 1956-10-23
•
Expires: 1972-11-15
Abstract
No abstract record available.
Inventors
- 👤 Carpenter James Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:40
CPC Classifications
B; B03; B03B; B03B13/00; B03B13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US430758A
Cited
US482419A
Cited
GB190613845A
Cited
US1217613A
Cited
US1866781A
Cited
GB319156A
Cited
US2245200A
Cited
US2445501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |