Patent US1373586A successfully refreshed from Google Patents.
US1373586A
Expired / Lapsed
US
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Machine for grinding formed cutters
Assignee: Individual
•
Filing: 1919-10-25
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Granted: 1921-04-05
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Expires: 1939-10-25
Abstract
No abstract record available.
Inventors
- 👤 William O Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:26
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/02; B24B3/08; B24B3/085
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) | 1924-04-04 | 1924-10-04 | 1925-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-04-04 | 1928-10-04 | 1929-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-04-04 | 1932-10-04 | 1933-04-05 | $7700.00 | Window Closed / Lapsed |