Fabrication method for chamfered hole
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United States of America Patent
Stats
-
Jan 31, 1989
Grant Date -
N/A
app pub date -
Apr 9, 1987
filing date -
Apr 15, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
This invention relates to a method for boring a chamfered hole and a tool for the same hole to effect boring a through hole on a glass plate and to simultaneously effect chamfering on respective aperture on the both sides of the plate, and have the function to enable speedy and accurate boring work without bringing forth defective product with chipping-off, joggles on the glass plate.
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Cited Art Landscape
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