US PATENT SUBCLASS 110 / 335
.~ Concave surface area

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

Internet Version by PATENTEC © 1999      Terms of Use


110 /   HD   FURNACES

331  DF  ARCH OR ROOF STRUCTURE {2}
335.~ Concave surface area

DEFINITION

Classification: 110/335

Concave surface area:

(under subclass 331) Structure wherein the arch has an inwardly curved contour.

SEE OR SEARCH CLASS

52, Static Structures (e.g., Buildings),

86+, 245, and 639+ for curved roof construction of general application.