Patents by Inventor Frank U. Lahde

Frank U. Lahde 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).

  • Indicating liquid funnel
    Patent number: 4796470
    Abstract: An indicating liquid funnel with simple, inexpensive indicating means which responds freely to rise of the liquid level within a container being filled approaching full fill in any operative position of the funnel.
    Type: Grant
    Filed: June 24, 1982
    Date of Patent: January 10, 1989
    Assignee: The Alten Corporation
    Inventor: Frank U. Lahde
  • Device for charging containers with an inert gas
    Patent number: 4344467
    Abstract: A device for evacuating air from a receptacle containing deteriorative material and charging the receptacle with an inert gas. The device has a nozzle by which the receptacle may be charged. The nozzle is connected to a gas supply source having means for sensing air and gas contents and pressures. The device is operated to reduce the oxygen in the receptacle and discharge an inert gas into the receptacle while monitoring the oxygen content therein.
    Type: Grant
    Filed: October 1, 1980
    Date of Patent: August 17, 1982
    Inventor: Frank U. Lahde