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US1871504A
Expired / Lapsed
US
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Truing device for the wheels of grinding machines
Assignee: Cincinnati Grinders Inc
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Filing: 1924-01-28
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Granted: 1932-08-16
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Expires: 1944-01-28
Abstract
No abstract record available.
Inventors
- 👤 Einstein Sol
- 👤 Lester F Nenninger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:32
CPC Classifications
B; B24; B24B; B24B53/00; B24B53/06; B24B53/04
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) | 1935-08-16 | 1936-02-15 | 1936-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-08-16 | 1940-02-15 | 1940-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-08-16 | 1944-02-15 | 1944-08-16 | $7700.00 | Window Closed / Lapsed |