US PATENT SUBCLASS 49 / 40
CONVEX OR CONCAVE CLOSURE AND OPENING

Current as of: June, 1999
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49 /   HD   MOVABLE OR REMOVABLE CLOSURES

40CONVEX OR CONCAVE CLOSURE AND OPENING

DEFINITION

Classification: 49/40

(under the class definition) Device wherein the closure surface and the means defining an opening for the closure are arched or bulged.

SEE OR SEARCH THIS CLASS, SUBCLASS:

42, for plural wing closures revolving about a center axis within an arc- shaped casing.