Patents by Inventor Martin John Langelaan

Martin John Langelaan 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).

  • Scraping tool
    Patent number: 6070292
    Abstract: A handle 2 has an integral connector 7 for connection with a suction hose and hand-grip ribs 13-16. A head 6 projects below the handle 7 with a transverse slot-shaped bottom opening, and a blade 22 extends along the front margin of the opening with a scraping edge projecting below the opening. An upstanding projection at the junction between the head 6 and the handle 2 has a front face which slopes forwardly and downwardly to the blade 22 for applying manual pressure to the scraping head.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: June 6, 2000
    Inventor: Martin John Langelaan