Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Martin AlbrechtfiledCriticalMartin Albrecht
Publication of CH63502ApublicationCriticalpatent/CH63502A/en
Heater manufacturing method, involves introducing heater with cone-shaped positive temperature coefficient heating element in housing that is compressed in region surrounding element, where impressed recesses are impressed in housing
Heater manufacturing method, involves introducing heater with cone-shaped positive temperature coefficient heating element in housing that is compressed in region surrounding element, where impressed recesses are impressed in housing