method of producing perforations in a solid material in sheet form, an irradiation device for working the method, and the resulting perforated material
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United States of America Patent
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Sep 11, 1990
Grant Date -
N/A
app pub date -
Jan 25, 1988
filing date -
Mar 25, 1986
priority date (Note) -
Expired
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Abstract
The invention relates to a method of producing perforations in a solid material in sheet form, an irradiation device for working the method and the resulting perforated material.
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