Patent US2520267A successfully refreshed from Google Patents.
US2520267A
Expired / Lapsed
US
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Grinding machine
Assignee: Bryant Grinder Corp
•
Filing: 1947-01-09
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Granted: 1950-08-29
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Expires: 1967-01-09
Abstract
No abstract record available.
Inventors
- 👤 Merton H Arms
- 👤 Paul A Grobey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:53
CPC Classifications
B; B24; B24B; B24B41/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1559206A
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US1583351A
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US1826178A
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US1997978A
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US1933213A
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US2083682A
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US2027627A
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US2069138A
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US2310338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |