JIS B 7284:1997
Welded joints for spectacle frames
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JIS B 7284:1997
Standard No.
JIS B 7284:1997
Release Date
1997
Published By
Japanese Industrial Standards Committee (JISC)
Latest
JIS B 7284:1997
Scope
This standard specifies welded hinges made of nickel silver and titanium used in eyeglass frames.
JIS B 7284:1997 history
1997
JIS B 7284:1997
Welded joints for spectacle frames
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