Patents by Inventor Donald M. Mayhew

Donald M. Mayhew 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).

  • Emergency flasher
    Patent number: 5103383
    Abstract: An all-weather, stable emergency signal lamp comprising a two-piece case, a rechargeable battery, a strobe light assembly and a dome lens.
    Type: Grant
    Filed: August 23, 1990
    Date of Patent: April 7, 1992
    Inventor: Donald M. Mayhew