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Home › Method of broaching outer periphery of lobe-type rotor of roots-type fluid machine, and broaching cutter used in the method

Method of broaching outer periphery of lobe-type rotor of roots-type fluid machine, and broaching cutter used in the method

US Patent 4869623 · Granted Sep 26, 1989

Estimated economic value: $26,000 ⓘ

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