Inventor · disambiguated record

Atsuhumi Okamoto

Also filed as: OKAMOTO ATSUHUMI

1 granted patent·18 citations·filing 1996–1996

38Inventor score

Technology areasB21B

Files withSUMITOMO METAL IND1

Top patents by PatentIndex Score

1 record

0171US5699690AMethod and apparatus for manufacturing hollow steel barsSUMITOMO METAL IND·Filed 1996·Granted Dec 23, 1997·18 cites·7 claims

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