US2545913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Renewable cutter for quarry drills
Assignee: Individual
•
Filing: 1948-02-20
•
Granted: 1951-03-20
•
Expires: 1968-02-20
Abstract
No abstract record available.
Inventors
- 👤 Walter F Bock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:49
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/62; F; F16; F16B; F16B2200/00; F16B2200/60; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7018
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US360838A
Cited
US881709A
Cited
US1064618A
Cited
FR453798A
Cited
US1532371A
Cited
US1571871A
Cited
US1647670A
Cited
US1941289A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |