Patents by Inventor Edwin A. Anderson

Edwin A. Anderson 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).

  • Double acting mechanical jar
    Patent number: 3963081
    Abstract: A double acting mechanical jar includes an outer housing and a mandrel extending longitudinally thereof with means connecting the mandrel and housing for relative longitudinal movement therebetween while inhibiting relative rotation therebetween.
    Type: Grant
    Filed: April 24, 1975
    Date of Patent: June 15, 1976
    Inventors: Edwin A. Anderson, Derrel D. Webb