US PATENT SUBCLASS 144 / 136.6
.~.~ Grooving stairway stringer

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


144 /   HD   WOODWORKING

134.1  DF  SHAPING MACHINE {16}
136.1  DF  .~ Grooving machine {9}
136.6.~.~ Grooving stairway stringer

DEFINITION

Classification: 144/136.6

Grooving stairway stringer:

(under subclass 136.1) Machine particularly adapted to score a structural member of a building stairway.