Patents by Inventor Robert O. Straayer

Robert O. Straayer 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).

  • Hand carried portable weeder convertible to a cultivator apparatus
    Patent number: 4501332
    Abstract: A hand carried portable weeder/cultivator apparatus for weeding and cultivating small areas such as flower and vegetable gardens having a uniquely shaped weeder/cultivator element of inverted dish-shape which is designed for converting conventional above ground, string-type weeders into a below ground weeder/cultivator.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: February 26, 1985
    Assignee: Evolution Enterprises, Inc.
    Inventor: Robert O. Straayer