4. Optics: measuring and testing
  5. Inspection of flaws or impurities
  6. Having predetermined light transmission regions

Koyo Machine Industries Co., Ltd.

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Antifriction bearing pre-loading device and shaft bearing struct

Bearings – Rotary bearing – Antifriction bearing
Patent

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Both-side grinding method and both-side grinding machine for...

Abrading – Precision device or process - or with condition responsive... – With indicating
Reexamination Certificate

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Centerless grinding machine

Abrading – Precision device or process - or with condition responsive... – With feeding of tool or work holder
Reexamination Certificate

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Cross shaft joint

Rotary shafts – gudgeons – housings – and flexible couplings for ro – Coupling accommodates drive between members having... – Coupling transmits torque via radially directed pin
Reexamination Certificate

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Double side grinding apparatus for flat disklike work

Abrading – Machine – Rotary tool
Patent

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