US2791067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding apparatus
Assignee: Standard Electrical Tool Co
•
Filing: 1956-07-12
•
Granted: 1957-05-07
•
Expires: 1976-07-12
Abstract
No abstract record available.
Inventors
- 👤 John J Falls
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:57
CPC Classifications
B; B24; B24B; B24B55/00; B24B55/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1217996A
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US1694340A
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US1911857A
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US2003495A
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US1891696A
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US1923760A
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GB445621A
Cited
GB479074A
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US2130823A
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US2294153A
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US2471561A
Cited
FR1052587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-06 | 1960-11-05 | 1961-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-06 | 1964-11-05 | 1965-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-06 | 1968-11-05 | 1969-05-07 | $7700.00 | Window Closed / Lapsed |