Patent US1452786A successfully refreshed from Google Patents.
US1452786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball pulverizing mill
Assignee: FRANK A BREWER JR
•
Filing: 1921-08-11
•
Granted: 1923-04-24
•
Expires: 1941-08-11
Abstract
No abstract record available.
Inventors
- 👤 Frank A Brewer
- 👤 George W Branston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:27
CPC Classifications
B; B02; B02C; B02C15/00; B02C15/12; B02C2015/126
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1926-04-23 | 1926-10-23 | 1927-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-04-23 | 1930-10-23 | 1931-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-04-23 | 1934-10-23 | 1935-04-24 | $7700.00 | Window Closed / Lapsed |