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Home › Method and apparatus for spot welding a work having a plurality of welding materials placed on top of each other by boring a hole to release vapors

Method and apparatus for spot welding a work having a plurality of welding materials placed on top of each other by boring a hole to release vapors

US Patent 6255618 · Granted Jul 3, 2001

Estimated economic value: $473,000 ⓘ

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