Patents by Inventor Patrick Frain

Patrick Frain 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).

  • Light projecting speargun
    Patent number: 4894940
    Abstract: An improvement in spearguns. A light is incorporated inside the speargun barrel to improve the field of sight for the spearfisherman. The light focuses on the area the spear is aiming at without interferring with the shot or increasing the drag through the water. The controls for the light are in close proximity to the trigger mechanism so it is easy to use. Despite being housed in the speargun barrel, the components are easy to service such as replacing the bulb or batteries.
    Type: Grant
    Filed: March 1, 1989
    Date of Patent: January 23, 1990
    Inventors: Patrick Frain, Denise Frain