US PATENT SUBCLASS 400 / 690.4
.~.~.~ Including means facilitating opening of enclosure

Current as of: June, 1999
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400 /   HD   TYPEWRITING MACHINES

679  DF  MEANS AUXILIARY TO TYPEWRITING FUNCTION {12}
689  DF  .~ Means for muffling typewriter noise {1}
690  DF  .~.~ By sound-barrier enclosure for typewriter (e.g., by sound-absorbing material) {3}
690.4.~.~.~ Including means facilitating opening of enclosure

DEFINITION

Classification: 400/690.4

Including means facilitating opening of enclosure:

(under subclass 690) Subject matter wherein the surrounding means has a section that provides access to the interior of the surrounding means, and wherein significance is attributed to said section or to an element that maintains said section in an access-permitting position or in an access-preventing position.