Patent US3570186A successfully refreshed from Google Patents.
US3570186A
Expired / Lapsed
US
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Grinding machine for grooving glass
Assignee: Sun Tool Machine Co
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Filing: 1969-04-18
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Granted: 1971-03-16
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Expires: 1989-04-18
Abstract
Abstract A GRINDING MACHINE FOR GROOVING GLASS SURFACES TO PROVIDE FOR FINGERPULLS, MITERS AND PLATE GROOVES, ESPECIALLY FOR MIRRORS, COMPRISING A GRINDING HEAD INCLUDING A MOTOR AND A MOTOR DRIVEN SPINDLE FOR CARRYING A GRINDING TOOL, E.G. A GRINDING WHEEL, MEANS FOR SELECTIVELY MOVING THE GRINDING HEAD HORIZONTALLY AND VERTICALLY, AND CONTROL MEANS CONTACTABLE WITH THE GLASS WORKPIECE FOR RAISING AND LOWERING THE GRINDING HEAD INTO AND OUT OF CONTACT WITH A SURFACE OF THE GLASS WORKPIECE.
Inventors
- 👤 Edwin J Kulwicki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:36
CPC Classifications
B; B24; B24B; B24B7/00; B24B19/00; B24B19/02
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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |