G - Physics
03
F
356/18, 96/247
G03F 5/02 (2006.01) G03F 7/20 (2006.01) H05K 3/00 (2006.01) H05K 3/28 (2006.01) H05K 3/34 (2006.01)
Patent
CA 2021474
K-17672/= Exposure Process Abstract of the Disclosure The process for the preparation of photostructured layers by exposing a positivephotoresist through a perforated material which is impervious to light saves thetime-consuming and expensive preparation of film patterns for solder varnishes.
Honegger Beat
Losert Ewald
Meier Kurt
Ag Ciba-Geigy
Fetherstonhaugh & Co.
Honegger Beat
Losert Ewald
Meier Kurt
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