335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets, subclasses 141+ for electromagnetic switches with combined electrothermal actuating means.
(Electricity: Magnetically Operated Switches, Magnets, and Electromagnets; subclasses; 141+ for electromagnetic switches with combined electrothermal actuating means)
Electricity: Magnetically Operated Switches, Magnets, and Electromagnets
subclasses
141+ for electromagnetic switches with combined electrothermal actuating means