US2613069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mining machine bit and block
Assignee: Cincinnati Mine Machinery Co
•
Filing: 1948-10-15
•
Granted: 1952-10-07
•
Expires: 1968-10-15
Abstract
No abstract record available.
Inventors
- 👤 Armin O Bruestle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:54
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/18; E21C35/19; E21C35/193; E21C35/191
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1615738A
Cited
US2036327A
Cited
US2244199A
Cited
US2039747A
Cited
US2263590A
Cited
US2398675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |