US PATENT SUBCLASS 220 / 662
.~ Transparent wall or portion

Current as of: June, 1999
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220 /   HD   RECEPTACLES

660  DF  SIDEWALL STRUCTURE {7}
662.~ Transparent wall or portion {3}
663  DF  .~.~> Sight glass
664  DF  .~.~> Instrument casing (e.g., for a meter, etc.)
665  DF  .~.~> Two or more walls

DEFINITION

Classification: 220/662

Transparent wall or portion:

(under subclass 660) Receptacle wherein at least a portion of a sidewall transmits light without appreciable scattering so that objects are visible therethrough.

SEE OR SEARCH THIS CLASS, SUBCLASS:

377+, for a removable closure having a transparent area.

602, for end wall structure having a transparent area.