Patent classifications
E
FIXED CONSTRUCTIONS
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E04
BUILDING
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E04D
ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
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13/00
Special arrangements or devices in connection with roof coverings; Protection against birds;; Roof drainage; ; Sky-lights;
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E04D13/15
Trimming strips; Edge strips; Fascias;; Expansion joints for roofs
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E04D13/152
with ventilating means; in soffits or fascias;
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