US PATENT SUBCLASS 33 / 428
.~.~ Straightedge bisects right angle of square (i.e., centering square)

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

Internet Version by PATENTEC © 1999      Terms of Use


33 /   HD   GEOMETRICAL INSTRUMENTS

403  DF  STRAIGHTEDGE TYPE {16}
427  DF  .~ Square and sliding nonpivotal straightedge(s) {1}
428.~.~ Straightedge bisects right angle of square (i.e., centering square)

DEFINITION

Classification: 33/428

Straightedge bisects right angle of square (i.e., centering square):

(under subclass 427) Subject matter wherein the straightedge is situated such that as it slides on the square, an edge of the straightedge indicates two equal angles of 45 deg..