US PATENT SUBCLASS 52 / 89
.~ Stonelike modules form arch

Current as of: June, 1999
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52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

86  DF  VERTICALLY CURVED ARCH WITH TERMINAL SUPPORT {3}
89.~ Stonelike modules form arch

DEFINITION

Classification: 52/89

(under subclass 86) Structure in which the arch is formed by abutting masonry or concrete-like units.