US2766940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball mill feed control
Assignee: Individual
•
Filing: 1954-04-05
•
Granted: 1956-10-16
•
Expires: 1974-04-05
Abstract
No abstract record available.
Inventors
- 👤 Weston David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:50
CPC Classifications
B; B02; B02C; B02C25/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2001543A
Cited
US2136907A
Cited
US2240822A
Cited
US2308917A
Cited
US2491466A
Cited
US2501583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |