US2328134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mining machine chain bit and holder therefor
Assignee: Individual
•
Filing: 1941-01-08
•
Granted: 1943-08-31
•
Expires: 1961-01-08
Abstract
No abstract record available.
Inventors
- 👤 Frank L Fulke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:26
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/10; E21B17/1042; E21C; E21C35/00; E21C35/18
Claims Analysis
Total Claims: 0
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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) | 1946-08-30 | 1947-03-01 | 1947-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-08-30 | 1951-03-01 | 1951-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-08-30 | 1955-03-01 | 1955-08-31 | $7700.00 | Window Closed / Lapsed |