Patent US3561032A successfully refreshed from Google Patents.
US3561032A
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US
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Brushing machine
Assignee: Sherwin Williams Co
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Filing: 1968-10-18
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Granted: 1971-02-09
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Expires: 1988-10-18
Abstract
Abstract A BRUSHING MACHINE FOR FINISHING OPPOSITE PARALLEL SURFACES COMPRISING A PAIR OF OPPOSITELY DIRECTED BRUSH SPINDLES, EACH HAVING A PAIR OF BRUSHES THEREON, THE INNER BRUSH ON ONE COOPERATING WITH THE OUTER BRUSH ON THE OTHER, AND A WORK HOLDING FIXTURE GRIPPING THE WORK AND MOVING THE SAME PAST THE BRUSHES.
Inventors
- 👤 Joseph A Kasnyik
- 👤 Vernon K Charvat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:51
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/02; B29K; B29K2021/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |