US2662500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for wiping in hardened inserts for rock drill bits
Assignee: Timken Co
•
Filing: 1949-07-09
•
Granted: 1953-12-15
•
Expires: 1969-07-09
Abstract
No abstract record available.
Inventors
- 👤 Fort Frank
- 👤 Eugene C Krug
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:08
CPC Classifications
B; B23; B23K; B23K31/00; B23K31/02; B23K31/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US150887A
Cited
US1470687A
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US1816610A
Cited
US1764271A
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US1879908A
Cited
US2105762A
Cited
US2142057A
Cited
US2474368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |