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Individual
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Individual
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Priority to ES65727ApriorityCriticalpatent/ES65727A2/en
Publication of ES65727A2publicationCriticalpatent/ES65727A2/en
ES65727A1917-11-101917-11-10
A procedure and apparatus for instantaneously and simultaneously turning on and off gas burners for public lighting.
ExpiredES65727A2
(en)