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Square Artwork Images on Glass to Produce Round Holes in Etched Metal Masks Disclosure Number: IPCOM000053102D
Original Publication Date: 1981-Aug-01
Included in the Prior Art Database: 2005-Feb-12

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DiFazio, JJ Vogt, RT [+details]


It is known to produce a round hole in metal by etching methods. A round image is used on a glass plate for exposing resist-coated metal.