US PATENT SUBCLASS 178 / 74
CIRCUITS

Current as of: June, 1999
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74CIRCUITS {2}
75  DF  .~> Manipulating switch
76  DF  .~> Retarded closer

DEFINITION

Classification: 178/74

(under the class definition) Subcombinations of systems or local circuit arrangements not amounting to systems nor specific to any particular type of system.

(1) Note. This subclass includes branch connections.

SEE OR SEARCH CLASS

335, Electricty: Magnetically Operated Switches, Magnets, and Electromagnets,

220+, for electromagnets with armatures.

361, Electricity: Electrical Systems and Devices,

139+, for electromagnetic device control circuits, and subclass 211 for nonelectromagnetic relay control circuits.