Patents by Inventor Gerald R. Hollenbeck

Gerald R. Hollenbeck 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).

  • Length extenders for standard levels
    Publication number: 20020116833
    Abstract: A means of extending the useful length of standard spirit levels currently in production and in use throughout the world. The length extension hardware is comprised of pairs of extender sleeves which fit over the core level to be extended and provided with means to secure the configuration at any selected length between the minimum and maximum lengths attainable with the core level and extender sleeve set being employed.
    Type: Application
    Filed: February 26, 2001
    Publication date: August 29, 2002
    Inventor: Gerald R. Hollenbeck