Patents by Inventor Mary Hefty

Mary Hefty 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 lawn mower, compactor and pickup device

Patent number: D332270

Type: Grant

Filed: October 16, 1990

Date of Patent: January 5, 1993

Inventor: Mary Hefty

Combined lawn mower, compactor and pickup device