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Joh Friedr Wallmann & Co
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Joh Friedr Wallmann & Co
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Publication date
Application filed by Joh Friedr Wallmann & CofiledCriticalJoh Friedr Wallmann & Co
Priority to ES23363ApriorityCriticalpatent/ES23363A1/en
Publication of ES23363A1publicationCriticalpatent/ES23363A1/en
A method for manufacturing primer balls which, by means of a special apparatus described, serve to automatically ignite the incandescent lighters by gas, said balls also turning off automatically.