Patents by Inventor Lawrence P. DiMarzio

Lawrence P. DiMarzio 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).

  • Patent number: 4442749
    Abstract: An electrical pickup device for a stringed musical instrument having ferromagnetic strings comprises a pair of superposed coaxial bobbins, each axially wound with a coil having its axis perpendicular to the instrument strings. An integral plate of magnetic material is provided comprising a base disposed between the two bobbins perpendicular to the coil axis and two side walls extending upwardly and perpendicularly from the base to at least immediately below the top face of the upper bobbin. A plurality of rod-like permanent magnets extend through at least the upper coil parallel to the axis thereof and contact the base of the integral plate and the magnets have like polarities at the tops thereof.
    Type: Grant
    Filed: August 6, 1982
    Date of Patent: April 17, 1984
    Assignee: DiMarzio Musical Instrument Pickups, Inc.
    Inventors: Lawrence P. DiMarzio, Steven L. Blucher
  • Patent number: 4320829
    Abstract: A trapezohedral insert converts a parallelipiped transparent plastic container into an effective merchandise display. Merchandise is held in the insert, easily inserted into the container with a minimum of expense for support material and labor.
    Type: Grant
    Filed: January 15, 1980
    Date of Patent: March 23, 1982
    Assignee: DiMarzio Musical Instrument Pickups, Inc.
    Inventors: Lawrence P. DiMarzio, Daniel Altilio
  • Patent number: 4227434
    Abstract: A simple adjustable mount is insertable in the soundhole of a stringed musical instrument where it supports itself without damage to the instrument. The mounted pickup is adjustable on the mount for desired position.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: October 14, 1980
    Inventor: Lawrence P. DiMarzio
  • Patent number: 4133243
    Abstract: An electric pickup for a lute-type musical instrument such as a guitar, has generally circular axial adjustment openings with internal wrench flats in unhardened steel or iron pole pieces. Two bar-type permanent magnets are disposed with like polarities adjacent and straddling one end of the pole pieces. A keeper of steel or the like bridges the permanent magnets.
    Type: Grant
    Filed: August 11, 1977
    Date of Patent: January 9, 1979
    Inventor: Lawrence P. DiMarzio