335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets, subclass 17 for electromagnetic circuit breakers with integral signalling, indicating, or alarm means.
(Electricity: Magnetically Operated Switches, Magnets, and Electromagnets; subclass; 17 for electromagnetic circuit breakers with integral signalling, indicating, or alarm means)
Electricity: Magnetically Operated Switches, Magnets, and Electromagnets
subclass
17 for electromagnetic circuit breakers with integral signalling, indicating, or alarm means