Patents by Inventor Chester P. K. Lau

Chester P. K. Lau 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).

  • Pocket battery tester
    Patent number: 4514695
    Abstract: This invention relates to battery testing devices in general, and more specifically to a compact battery testing device having multiple, extensible, and articulated contact points, which allow virtually every type of portable appliance battery to be tested to determine if the batteries need to be replaced.
    Type: Grant
    Filed: September 3, 1982
    Date of Patent: April 30, 1985
    Inventor: Chester P. K. Lau