DH

David I. M. Henshaw

CO Congoleum: 1 patents #40 of 73Top 55%
Overall (All Time): #4,081,637 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4244899 Method for chemical embossing a foamable thermoplastic resin sheet using an ink composition containing a chemical blowing agent — 1981-01-13