Method of Making an Optical Mask for Reproducing Circuit Boards.
OFFICE OF THE SECRETARY OF THE ARMY WASHINGTON D C
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The patent describes a method of making an etched stripline circuit board comprising a copper-clad substrate covered with an etch-resist Mylar tape. A precision coordinatograph is employed for cutting the circuit through the Mylar tape on a 11 scale unneeded portions of the tape are stripped away, and the remaining portions of the tape are used as a resist during an etching process.
- Electrical and Electronic Equipment