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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5/00
Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles
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E06C5/32
Accessories; , e.g. brakes on ladders
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E06C5/34
Indicating devices
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