4. Rotary expansible chamber devices
  5. Helical working member

Satoshi Oyama

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Active high Q filter using transistor

Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent

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Fluid compressor having a molded helical blade

Rotary expansible chamber devices – Helical working member
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Fluid machinery

Rotary expansible chamber devices – Helical working member
Reexamination Certificate

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Fluid machinery having a sealing member between stepped spirals

Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent

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Gas-insulated switching apparatus

Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
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Profile ID: LFUS-PAI-P-157768

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