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PCE
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CPC Subgroup
E06B 3/99

for continuous frame members crossing each other with out interruption (window bars E06B3/68)

Full Title

Window sashes, door leaves, or like elements for closing openings; Layout of fixed or moving closures, e.g. windows ; Features of rigidly-mounted outer frames relating to the mounting of wing frames (E06B5/00 takes precedence; shutters or the like E06B9/00; glass panes C03) > Corner joints or edge joints for windows, doors, or the like frames or wings > for continuous frame members crossing each other with out interruption (window bars E06B3/68)