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EP0268549A1
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Device for improvement of the ventilation inside of a helmet, in particular for motorcycle use
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CH670744A5
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Crash helmet with chin protector - has casing of chin protector secured by strap and hinge swinging outwards for quick release
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CH656783A5
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COVER INSIDE OF PROTECTIVE HELMETS FOR BIKERS IN PARTICULAR, moped, CYCLISTS.
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CH654728A5
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HELMET PROTECTION FOR Motorcycle and moped riders.
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CH643126A5
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PROCEDURE FOR THE MANUFACTURE OF A HELMET PROTECTION OF NON-METALLIC STRETCH FOR Motorcycle and moped riders, COMPLETE WITH CHIN STRAP FIXED AT IT.
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CH643125A5
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Procedure for manufacturing protective helmets for motorcyclists and motorcycles without metal parts, and helmet made with the procedure.
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DE2809012A1
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HELMET WITH MOVABLE SUN VISOR
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CH610740A5
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Integral helmet with movable visor for general sports use
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