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Home › Etching solutions containing ammonium fluoride and anionic sulfate esters of alkylphenol polyglycidol ethers and method of etching

Etching solutions containing ammonium fluoride and anionic sulfate esters of alkylphenol polyglycidol ethers and method of etching

US Patent 4871422 · Granted Oct 3, 1989

Estimated economic value: $1,214,000 ⓘ

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