Patents by Inventor Marcelo Gurule

Marcelo Gurule 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).

  • Patent number: 4073525
    Abstract: Apparatus for securing the latch bolt of a conventional door lock against unauthorized withdrawal including a pin assembly provided with a handle, wherein the pin assembly can be alternately stored in a retainer plate or secured thereby in a locked position. More specifically the retainer plate includes an opening conformed to receive the pin of the pin assembly, said opening being aligned with a bore extending through the door into the latch bolt. Adjacent the opening there is provided in the retainer plate a storage hoop which is conformed to function both to store the pin assembly and to secure the handle when inserted.
    Type: Grant
    Filed: June 9, 1977
    Date of Patent: February 14, 1978
    Inventor: Marcelo Gurule