ES72885A1 -
An indicative method, and its corresponding apparatus, to find out the state of steel, iron or other magnetizable metal during its treatment by heat.
- Google Patents
An indicative method, and its corresponding apparatus, to find out the state of steel, iron or other magnetizable metal during its treatment by heat.
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Individual
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ES72885A1920-03-081920-03-08
An indicative method, and its corresponding apparatus, to find out the state of steel, iron or other magnetizable metal during its treatment by heat.
ExpiredES72885A1
(en)