4. Powder metallurgy processes
  5. Powder metallurgy processes with heating or sintering
  6. Powder pretreatment

Yoshio Katagiri

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Color filter

Stock material or miscellaneous articles – Composite – Of bituminous or tarry residue
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Digital-analog converter

Communications: electrical – Audible indication – Percussion-type sound producer
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Non-linear coder for pulse code modulation of telephone signals

Communications: electrical – Audible indication – Percussion-type sound producer
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Process for manufacturing sintered bodies

Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Powder pretreatment
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