ES204190A1 - A perfect procedure to color, with varnishes objects of brass by chemical reactions (Machine-translation by Google Translate, not legally binding)
- Google Patents
A perfect procedure to color, with varnishes objects of brass by chemical reactions (Machine-translation by Google Translate, not legally binding)
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Improvements in the construction of passage valves characterized in that the valve itself is mounted on the end of a rod that on the other side has a threaded part in which the drive wheel that turns on itself when the valve is maneuvered is screwed. Stem by key arrangement moves without rotating according to its axis. (Machine-translation by Google Translate, not legally binding)
ES204190A1952-06-201952-06-20A perfect procedure to color, with varnishes objects of brass by chemical reactions (Machine-translation by Google Translate, not legally binding)
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