Patents by Inventor Mark L. Freed

Mark L. Freed 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: 5080352
    Abstract: The present invention relates to a complete abdominal muscle exercise and workout machine for use by an individual to strengthen and develop the abdominal muscles. The machine is of light-weight and simple (but sturdy) construction, is of compact and portable design, and may be easily assembled into alternative forms for the performance and practice of a wide variety of hanging exercises, lying exercises and up and down exercises. The machine may be easily disassembled for storage and transportation purposes.
    Type: Grant
    Filed: April 22, 1991
    Date of Patent: January 14, 1992
    Inventor: Mark L. Freed
  • Patent number: 4887506
    Abstract: An electric guitar type stringed musical instrument having an elongated fingerboard, an upper headpiece and nut and a lower tailpiece and bridge, with a first set of primary frets placed in regular sequence along the fingerboard from its upper end to its lower end and a set of secondary frets each placed intermediate a pair of primary frets along the fingerboard. Each secondary fret is in off-set diagonal orientation with respect to the primary frets and is so placed between primary frets that upon tapping of a string of the instrument at a point below a secondary fret with depression of the string to contact the secondary fret and a lower primary fret two harmonically resolved, bi-directional musical notes are generated through the string. One of such notes is related to the length of the portion of the string between the lower primary fret and the bridge of the instrument and is picked up by a pickup head of a lower magnetic pickup assembly.
    Type: Grant
    Filed: September 29, 1987
    Date of Patent: December 19, 1989
    Assignee: Noma Video Inc.
    Inventor: Mark L. Freed
  • Patent number: 4697492
    Abstract: Electric stringed musical instruments having an elongated fingerboard, an upper headpiece and nut and a lower tailpiece and bridge, with a first set of primary frets placed in regular sequence along the fingerboard from its upper end to is lower end and a set of secondary frets each placed intermediate a pair of primary frets along the fingerboard. Each secondary fret is so placed between two primary frets that upon depression of a string of the instrument between any selected pair of frets comprising a primary fret and an adjacent secondary fret, accompanied by plucking or strumming of the string, two harmonically resolved musical notes are generated. One of such notes is related to the length of the portion of the string between the lower fret of the selected pair of frets and the lower bridge of the instrument and is picked up by a pickup head of a lower magnetic pickup assembly.
    Type: Grant
    Filed: April 11, 1986
    Date of Patent: October 6, 1987
    Assignee: Diversco, Inc.
    Inventor: Mark L. Freed