PROTECTIVE HELMET
United States Patent 3500475

Inventors:
Otsuka, Norimoto
Publication Date:
03/17/1970
View Patent Images:
Download PDF 3500475 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
HONDA GIJUTSU KENKYUSHO KK
Primary Class:
2/421
Other Classes:
2/425
International Classes:
A42B3/32; A42B3/02
US Patent References:
3239842Safety helmet
3344433Crash helmet




<- Previous Patent (ADJUSTABLE HEADBAND)   |   Next Patent (ADHESIVE ATTACHMENT ...) ->