Patent US3021082A successfully refreshed from Google Patents.
US3021082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibratory ball mill system
Assignee: National Research Development Corp UK
•
Filing: 1960-01-21
•
Granted: 1962-02-13
•
Expires: 1980-01-21
Abstract
No abstract record available.
Inventors
- 👤 Sullivan Ralph Major Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:58
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/14; B01; B01J; B01J19/00; B01J19/08; B01J19/10; B06; B06B; B06B1/00; B06B1/10; B06B1/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |