Complex sentence: Channel 36 would remain dark until the station was relaunched on August 16,1969 as WATL-TV, under the joint ownership of the U.S. Communications Corporation station group located in Philadelphia holding an 80% interest and 20% by D.H. Overmyer.
Split into simpler sentences: Channel 36 would remain dark until the station was relaunched on August 16,1969 as WATL-TV. It was jointly owned by the U.S. Communications Corporation station group of Philadelphia holding an 80% interest and the remaining 20% by D.H. Overmyer.