Pan Chunshan — 1 Patent

PSPaul Wurth S.A.: 1 patents #107 of 227Top 50%

Shijingshan District, CN: #1 of 4 inventorsTop 25%

Overall (All Time): #3,996,885 of 4,157,543Top 100%

1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4593751	Chequer-brick for vertical cowpers and cowper chequerwork constructed from these chequer-bricks	—	1986-06-10