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Hachirou Yokoyama
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Aichi, JP
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last 30 patents
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Patent Grant
Apparatus for producing special yarns
Patent number
4,569,192
Issue date
Feb 11, 1986
Howa Kogyo Kabushiki Kaisha
Yoshiharu Yamada
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
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Patent Grant
Apparatus for controlling the winding speed of roving in roving frame
Patent number
4,551,969
Issue date
Nov 12, 1985
Howa Kogyo Kabushiki Kaisha
Takashi Kogiso
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING