US PATENT SUBCLASS 52 / 670
.~.~ Expanded metal

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

633  DF  OPENWORK; E.G., TRUSS, TRELLIS, GRILLE, SCREEN, FRAME, OR REBAR CHAIR {12}
660  DF  .~ Fabric or lattice; e.g., indeterminate grating {7}
670.~.~ Expanded metal {1}
671  DF  .~.~.~> Laterally displaced sections; e.g., corrugated {1}

DEFINITION

Classification: 52/670

(under subclass 660) Structure in which the structure is an unitary foraminous sheet formed by slitting it and opening the slits by opposed pulling forces thus forming a sheet of

integral connected strips, which strips thus define openings through the sheet.

SEE OR SEARCH THIS CLASS, SUBCLASS:

635, for a truss with unitary chord and web of expanded metal.

SEE OR SEARCH CLASS

29, Metal Working,

6.1+, for processes and machines for forming expanded metal sheets. 428, Stock Material or Miscellaneous Articles,

596, for expanded metal stock material.