Patents by Inventor Fredrick P. Brechtel

Fredrick P. Brechtel 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).

  • IONIZATION VACUUM PRESSURE GAUGE
    Publication number: 20030057953
    Abstract: There is described a vacuum gauge in which an anode grid defines an ionization volume directly into which electrons are injected where they collide with gas molecules and atoms to form ions. A collector electrode is mounted within the ionization volume.
    Type: Application
    Filed: September 13, 2001
    Publication date: March 27, 2003
    Applicant: Duniway Stockroom Corp.
    Inventors: Sherman L. Rutherford, Ronald M. Paitich, Fredrick P. Brechtel, Robert J. Espinosa