US PATENT SUBCLASS 52 / 204.593
.~.~ At least two spaced panes

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

204.5  DF  WINDOW OR WINDOW SASH, SILL, MULLION, OR GLAZING {13}
204.591  DF  .~ Spacing pane from disparate edging {3}
204.593.~.~ At least two spaced panes {1}
204.595  DF  .~.~.~> Spaced by unitary or contacting U-channels

DEFINITION

Classification: 52/204.593

At least two spaced panes:

(under subclass 204.591) Structure including at least two similar panels held in facially spaced parallel relationship by the separator member.

SEE OR SEARCH THIS CLASS, SUBCLASS:

204.52, for a double pane vented panel.

811+, for another composite panel formed by facially spaced panes.