Noise attenuating device especially for motor cycle helmet
A Standard patent application filed on 18 March 2002 credited to Borgund, Sven Age
;
Hoel, Karl-Willie
Details
Application number :
2002239185
Application type :
Standard
Application status :
LAPSED
Under opposition :
No
Proceeding type :
Invention title :
Noise attenuating device especially for motor cycle helmet