US2998201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding mills
Assignee: American Brake Shoe Co
•
Filing: 1959-03-31
•
Granted: 1961-08-29
•
Expires: 1979-03-31
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Ratkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:01
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/18; B02C17/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE104482C
Cited
US730900A
Cited
US1176040A
Cited
GB576468A
Cited
US2268661A
Cited
FR1096407A
Cited
US2680568A
Cited
FR64710E
Cited
AT194694B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |