Patents by Inventor Leo D. Kalous

Leo D. Kalous 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).

  • Test tube rack
    Patent number: 4787523
    Abstract: A test tube rack for both group stamping and thereafter holding reagent tubes in test position. The rack includes end supports and an intermediate test tube grid and is operable in alternate horizontal position for the stamping operations and in a vertical position for the test operation. Control bars with means for holding specimen tubes may also operate to hold the reagent tubes in position. The control bars also operate in open and closed positions.
    Type: Grant
    Filed: July 6, 1987
    Date of Patent: November 29, 1988
    Inventor: Leo D. Kalous