SS

Sachinobu Shimizu

NP Nippon Telegraph And Telephone Public: 1 patents #297 of 842Top 40%
Overall (All Time): #4,100,448 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4300390 Apparatus for determining positional coordinates utilizing the terrestrial magnetism as a directional reference — 1981-11-17