Electromagnets with Armatures: Electromagnets of the tractive type which include an armature for converting electrical energy into mechanical work through the agency of electromagnetic induction are classified in Class 335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets, subclasses 220+ for electromagnets with armatures.
(Electromagnets of the tractive type which include an armature for converting electrical energy into mechanical work through the agency of electromagnetic induction; are classified; L:in Class 335) (Electromagnets with Armatures; subclasses; 220+ for electromagnets with armatures)
Electromagnets of the tractive type which include an armature for converting electrical energy into mechanical work through the agency of electromagnetic induction Electromagnets with Armatures
are classified subclasses
L:in Class 335
220+ for electromagnets with armatures