Patent US2774199A successfully refreshed from Google Patents.
US2774199A
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US
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Abrading machine
Assignee: Porter Cable Machine Co
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Filing: 1951-09-15
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Granted: 1956-12-18
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Expires: 1971-09-15
Abstract
No abstract record available.
Inventors
- 👤 Arthur N Emmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:28
CPC Classifications
B; B24; B24B; B24B55/00; B24B55/06; B24B55/10; B24B55/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB273836A
Cited
US1873011A
Cited
US1868507A
Cited
GB475714A
Cited
US2114966A
Cited
US2204178A
Cited
US2268863A
Cited
US2395537A
Cited
US2545942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |