Patent US3471277A successfully refreshed from Google Patents.
US3471277A
Expired / Lapsed
US
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Amide impregnated grinding wheels
Assignee: Milacron Inc
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Filing: 1966-11-08
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Granted: 1969-10-07
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Expires: 1986-11-08
Abstract
No abstract record available.
Inventors
- 👤 Russell A Ackermann Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:19
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/34; B24D3/348; B24D3/02; B24D3/04; B24D3/14; B24D3/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |