US2722212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for truing or dressing grinding wheels by reproduction from a pattern
Assignee: ERNA LINDNER
•
Filing: 1953-05-18
•
Granted: 1955-11-01
•
Expires: 1973-05-18
Abstract
No abstract record available.
Inventors
- 👤 Schultze Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:39
CPC Classifications
B; B24; B24B; B24B53/00; B24B53/06; B24B53/08; B24B53/081
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US6843A
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US297454A
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US845305A
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US1008919A
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US1132920A
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US1571323A
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US1905390A
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US2276260A
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US2596555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-31 | 1959-05-02 | 1959-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-31 | 1963-05-02 | 1963-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-31 | 1967-05-02 | 1967-11-01 | $7700.00 | Window Closed / Lapsed |