4. Acoustics
  5. Sound-modifying means
  6. Sound absorbing panels

Alan Eckel

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Automatic door closure for double-acting doors

Movable or removable closures – Mounted for multidirectional or oblique movement – One direction imparts gravitational bias to swinging...
Reexamination Certificate

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Panel assemblies

Acoustics – Sound-modifying means – Sound absorbing panels
Patent

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Profile ID: LFUS-PAI-P-1268188

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