US PATENT SUBCLASS 52 / 741.2
.~ Stair

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

741.1  DF  PROCESSES {14}
741.2.~ Stair

DEFINITION

Classification: 52/741.2

Stair:

(under subclass 741.1) Subject matter wherein the process comprises a method of construction of a staircase, riser, tread, etc.