Patent US1395394A successfully refreshed from Google Patents.
US1395394A
Expired / Lapsed
US
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Mechanism for truing and dressing grinding-wheels
Assignee: PREC TRUING MACHINE AND TOOL C
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Filing: 1920-10-07
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Granted: 1921-11-01
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Expires: 1940-10-07
Abstract
No abstract record available.
Inventors
- 👤 Edward R Conners
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:32
CPC Classifications
B; B24; B24B; B24B53/00; B24B53/06; B24B53/07
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) | 1924-10-31 | 1925-05-02 | 1925-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-10-31 | 1929-05-02 | 1929-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-10-31 | 1933-05-02 | 1933-11-01 | $7700.00 | Window Closed / Lapsed |