Patent US5745746A successfully refreshed from Google Patents.
US2804868A
Expired / Lapsed
US
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Dressing device for grinding wheels
Assignee: Individual
•
Filing: 1954-12-29
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Granted: 1957-09-03
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Expires: 1974-12-29
Abstract
No abstract record available.
Inventors
- 👤 Clarence A Coup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:24
CPC Classifications
B; B24; B24B; B24B53/00; B24B53/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1929967A
Cited
US2218775A
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US2234539A
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US2378401A
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US2395598A
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US2608189A
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US2642856A
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US2736310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |