JR

Johannes F. Roeloffzen

📍 Sas van Gent, NL: #3 of 4 inventorsTop 75%
Overall (All Time): #4,105,371 of 4,157,543Top 100%
1
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4186229 Method of manufacturing base plates suitable for pressing records and plates manufactured by the same 1980-01-29