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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E06C9/14
with non-rigid longitudinal members, e.g. rope or chain ladders, ladders of the lazy-tongs type
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