US2597180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary edge grinding machine
Assignee: Sun Tool and Machine Co
•
Filing: 1950-05-06
•
Granted: 1952-05-20
•
Expires: 1970-05-06
Abstract
No abstract record available.
Inventors
- 👤 William A Reaser
- 👤 Elmer A Ziems
- 👤 John M Christman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:12
CPC Classifications
B; B24; B24B; B24B9/00; B24B9/02; B24B9/06; B24B9/08; B24B9/10; B24B9/105; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/304144
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US236824A
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US384995A
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US531368A
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US1597748A
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US1685613A
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US1049412A
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US1444225A
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US1617562A
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US1921715A
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US2015495A
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US2010922A
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US2209538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |