Patents by Inventor Luis G. Leon

Luis G. Leon 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).

  • Safety devices for door locks of the spring-loaded, sliding bolt type
    Patent number: 4154468
    Abstract: A device for rendering a spring-loaded, sliding bolt lock resistant to tampering comprises a sheet form member which can be mounted between the door stile and the door jamb and is formed with slots so that when a strip of pliable material is inserted between the door stile and the door jamb at a position spaced from the lock and is moved towards the lock, the leading edge of the sheet engages one of the slots in the member.
    Type: Grant
    Filed: October 11, 1977
    Date of Patent: May 15, 1979
    Inventor: Luis G. Leon