US2626533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of bits for mining drills
Assignee: Central Mine Equipment Co
•
Filing: 1949-10-12
•
Granted: 1953-01-27
•
Expires: 1969-10-12
Abstract
No abstract record available.
Inventors
- 👤 Elmer J Huckshold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:47
CPC Classifications
B; B21; B21K; B21K5/00; B21K5/02; B21K5/06; A; A01; A01B; A01B35/00; A01B35/02; A01B35/10; E; E21; E21B; E21B10/00; E21B10/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1409258A
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US2003019A
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US2297983A
Cited
US2372612A
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US2341237A
Cited
US2387983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |