Patent US2881142A successfully refreshed from Google Patents.
US2812623A
Expired / Lapsed
US
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Grinding machines with wear compensator
Assignee: Sebastian Messerschmidt Spezialmaschinenfabrik Firma
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Filing: 1952-06-17
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Granted: 1957-11-12
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Expires: 1972-06-17
Abstract
No abstract record available.
Inventors
- 👤 Messerschmidt Sebastian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:41
CPC Classifications
B; B24; B24B; B24B49/00; B24B49/18; B24B49/183
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1922093A
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US1991953A
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US2280692A
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US2267391A
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US2486950A
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FR1039908A
Cited
DE928033C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |