%0 Journal Article
%T Helmet. No. 2,457,554
%J Journal of the patent office society
%D 1948
%A Harding, H. C.
%V 43
%N 
%P UNKNOWN-UNKNOWN
%X <p>[Abstract unavailable]</p><p>Language: en</p>
%G en
%I Patent Office Society
%@ 0096-3577
%U http://dx.doi.org/