Patents by Inventor Lowell Sherman

Lowell Sherman 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).

  • Let-ball detectors
    Patent number: 4081798
    Abstract: Electric currents induced by a magnetic field being moved in relation to a fixed coil, by a vertical displacement of the net cable/tennis net, enables a referee to detect the occurrence of a "let-ball.
    Type: Grant
    Filed: March 14, 1977
    Date of Patent: March 28, 1978
    Inventor: Lowell Sherman Pelfrey
  • Sandal
    Patent number: D852472
    Type: Grant
    Filed: April 7, 2018
    Date of Patent: July 2, 2019
    Inventor: Lowell Sherman
  • Sandal strap
    Patent number: D890502
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: July 21, 2020
    Assignee: ViaKix, LLC
    Inventor: Lowell Sherman
  • Sandal straps
    Patent number: D894545
    Type: Grant
    Filed: March 10, 2019
    Date of Patent: September 1, 2020
    Inventor: Lowell A. Sherman
  • Straps for footwear
    Patent number: D936939
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: November 30, 2021
    Inventor: Lowell Sherman
  • Crossing straps for footwear
    Patent number: D936940
    Type: Grant
    Filed: July 3, 2020
    Date of Patent: November 30, 2021
    Inventor: Lowell Sherman
  • Straps for footwear
    Patent number: D940440
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: January 11, 2022
    Inventor: Lowell Sherman