Patents by Inventor John D. Prest

John D. Prest 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).

  • Tripod lantern stand
    Patent number: 4791538
    Abstract: Three cylinders containing a combustible gas under pressure are interchangeably attached to a lantern supporting stanchion to serve as a tripod stand for the lantern and provide a source of fuel for the lantern from one of the locations of attachment.
    Type: Grant
    Filed: January 22, 1988
    Date of Patent: December 13, 1988
    Inventor: John D. Prest
  • Convertible stand for table tops
    Patent number: 4223860
    Abstract: Multiple pivotable legs are radially extendable from a pole stand for a table top to permit support of the table top by pivotal extension of the legs for supporting the stand or the legs may be radially collapsed to permit engagement of the lower end of the stand with a fixed recess.
    Type: Grant
    Filed: January 5, 1979
    Date of Patent: September 23, 1980
    Inventor: John D. Prest