Patent classifications
E
FIXED CONSTRUCTIONS
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E06
DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
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E06C
LADDERS
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9/00
Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
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E06C9/08
with rigid longitudinal members
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E06C9/10
forming part of a building, such as a balcony grid, window grid, or other window part
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