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US2439263A
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Grinding wheel dresser
Assignee: FREDERICK ROY DALZEN
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Filing: 1944-08-09
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Granted: 1948-04-06
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Expires: 1964-08-09
Abstract
No abstract record available.
Inventors
- 👤 Ernest A Overstedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:03
CPC Classifications
B; B24; B24B; B24B53/00; B24B53/06; B24B53/08; B24B53/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE262538C
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US1352872A
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US1847337A
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US1666737A
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US1970060A
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US2352661A
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US2311263A
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US2398451A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-06 | 1951-10-06 | 1952-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-06 | 1955-10-06 | 1956-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-06 | 1959-10-06 | 1960-04-06 | $7700.00 | Window Closed / Lapsed |