4. Metal working
  5. Method of mechanical manufacture
  6. Heat exchanger or boiler making

Toshiaki Hashizume

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Apparatus for manufacturing internal grooved tube

Metal deforming – By use of tool acting during relative rotation between tool... – Spherical tool
Reexamination Certificate

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Axial-flow fan and projector provided with the same

Rotary kinetic fluid motors or pumps – With separating means or guard for solid matter in working...
Reexamination Certificate

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Dichroic prism and projection display apparatus

Optical: systems and elements – Single channel simultaneously to or from plural channels – By refraction at beam splitting or combining surface
Reissue Patent

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Dichroic prism and projection display apparatus

Optical: systems and elements – Single channel simultaneously to or from plural channels – By refraction at beam splitting or combining surface
Reexamination Certificate

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Dichroic prism and projection display apparatus

Optical: systems and elements – Single channel simultaneously to or from plural channels – By refraction at beam splitting or combining surface
Patent

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Profile ID: LFUS-PAI-P-631158

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