Class 2/416 - By suspension rigging

Subclass of Class 2 - Apparel
Definition: Device in which the helmet is spaced from the head of the
No. of patents: 81
Last issue date: 05/10/2011

Number	Title	Issue Date
4035847	Suspension for a hard hat A hard hat suspension which includes a group of highly curved, narrow and transversely thick suspension legs and a second group of slightly curved, wide and transversely thin suspension legs in angularly spaced relation, arranged so that the more yieldabl...	07/19/1977

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