335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets, subclass 201 for electromagnetically operated switches with magnetic blow out means.
(Electricity: Magnetically Operated Switches, Magnets, and Electromagnets; subclass; 201; for electromagnetically operated switches with magnetic blow out)
Electricity: Magnetically Operated Switches, Magnets, and Electromagnets
subclass
201 for electromagnetically operated switches with magnetic blow out