4. Stock material or miscellaneous articles
  5. Two dimensionally sectional layer
  6. Next to unitary web or sheet of equal or greater extent

Keith M. Hankel

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Acoustical composite

Acoustics – Sound-modifying means – Sound absorbing panels
Patent

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Acoustical material

Stock material or miscellaneous articles – Two dimensionally sectional layer – Next to unitary web or sheet of equal or greater extent
Patent

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Acoustical material for use in association with noise generating

Acoustics – Auditorium
Patent

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Profile ID: LFUS-PAI-P-1644810

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