Patents by Inventor David E. Emmer

David E. Emmer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

Combined solar heat collector and cover for swimming pools

Patent number: D258463

Type: Grant

Filed: May 15, 1978

Date of Patent: March 3, 1981

Inventor: David E. Emmer

Combined solar heat collector and cover for swimming pools