UV Laser Exposure Of Housings And Components Of Door Drives And Door Closers
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United States of America Patent
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Issued Date -
Sep 5, 2013
app pub date -
Oct 25, 2011
filing date -
Nov 5, 2010
priority date (Note) -
Abandoned
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Abstract
A door operator or a door closer having at least one housing and at least one piston supported to be movable in a reception of the housing. The surfaces of the reception and/or of the at least one piston have been treated by exposure to electromagnetic radiation.
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Cited Art Landscape
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