HS

Hiroyoshi Seto

OC Osaka Gas Co.: 1 patents #252 of 689Top 40%
Overall (All Time): #4,061,823 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4419163 Pipeline coating method Mitsuo Yamamoto, Takeo Namazugoshi 1983-12-06