C. F. Burgess Laboratories, Inc. v. Coast Insulating Corp.

JAMES, District Judge.

The art to he considered in this case is within the field of acoustics; particularly as it has to do with sound wave diffraction in relation to the absorption of sound in walls or ceilings. It has long been the purpose of builders to do two things; so construct division partitions, ceilings or walls that (1) sound created within a room will be absorbed in the wall and not reflected, and (2) that the sound-absorbing effect, when accomplished by sound-deadening means, will prevent the transmission of such sound through the intervening material into adjacent space.…