Patent EP0397110A2 successfully refreshed from Google Patents.
US641107A
Expired / Lapsed
US
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Machine for grinding drills.
Assignee: Buckeye Iron and Brass Works
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Filing: 1899-10-07
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Granted: 1900-01-09
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Expires: 1919-10-07
Abstract
No abstract record available.
Inventors
- 👤 William C Heister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:38
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/24; B24B3/247
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) | 1903-01-09 | 1903-07-11 | 1904-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-01-09 | 1907-07-11 | 1908-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-01-09 | 1911-07-11 | 1912-01-10 | $7700.00 | Window Closed / Lapsed |