Patents by Inventor Donald J. Markovetz

Donald J. Markovetz 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).

  • Pocket screwdriver
    Patent number: 4827812
    Abstract: A pocket screwdriver 10 having a hollow shaft 11, one end of which is contoured to receive the hexagonal shaft 25 of a standard interchangeable screwdriver bit, 13 or 18, a thrust bearing magnet 17 for magnetically attaching to the standard hexagonal bit, a storage compartment 23 for storing one or more interchangeable hexagonal bits, a shirt pocket clip 15 attached to the hollow shaft 11 and a torque cap 12 which can be radially attached to the shaft thereby acting as torque amplification means.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: May 9, 1989
    Inventor: Donald J. Markovetz