SY

Sekiji Yokota

HC Hayakawa Rubber Co.: 1 patents #1 of 4Top 25%
📍 Yama, JP: #1 of 2 inventorsTop 50%
Overall (1982): #31,606 of 81,411Top 40%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4338224 Water proofing compositions for cement mortar or concrete Toshihiro Fujii 1982-07-06