C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
204/19, 149/4
C23F 1/08 (2006.01) C23F 1/02 (2006.01) C23F 1/46 (2006.01) H05K 3/06 (2006.01)
Patent
CA 1227111
Abstract of the Disclosure There is disclosed a process and apparatus for etching printed board circuits wherein etching of a printed circuit board is effected in turbulent flow of the etching solution and wherein concentration of the etching solution is maintained at effective levels by electrolysis.
469870
Holzer Walter
Smart & Biggar
LandOfFree
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