Patents by Inventor Andrew H. Principe

Andrew H. Principe 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).

  • Breath alcohol test medium
    Patent number: 3951855
    Abstract: A standard breath alcohol test medium comprises a canister containing a charge of nitrogen and vaporized alcohol having a predetermined amount of alcohol per unit of volume therein, and means on the canister accommodating discharge of the nitrogen and alcohol mixture therefrom, preferably by pressure discharge or hypodermic extraction through a self-sealing septum in the wall of the canister. A method for filling the containers with a predetermined amount of alcohol vapor is also disclosed.
    Type: Grant
    Filed: July 9, 1973
    Date of Patent: April 20, 1976
    Assignee: Cand-Aire Industries, Inc.
    Inventors: Andrew H. Principe, Emmett P. Glynn