4. Acoustics
  5. Sound-modifying means
  6. Muffler, fluid conducting type

Perry A. Main

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Method and apparatus for expanding tubular members

Metal deforming – By relatively receding work-engaging tool-faces – Embodying three or more tools
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Tube and chamber construction for an exhaust muffler

Acoustics – Sound-modifying means – Muffler – fluid conducting type
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Profile ID: LFUS-PAI-P-443780

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