Patents by Inventor Martin Blumenthal

Martin Blumenthal 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).

  • Sorting top
    Patent number: 4455781
    Abstract: A spinable hollow body with entry ports for receiving objects having prescribed configurations, including a base that is releasable by the spin generating mechanism in order to allow objects entered into selected entry ports to be released from the interior of the spinning body, which can therefore be considered to be a sorting top.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: June 26, 1984
    Inventor: Martin Blumenthal
  • Handle operable vehicles
    Patent number: 4449322
    Abstract: A vehicle with a handle that is readily releasable for an auxiliary use, such as a shovel. The releasable end of the handle is in the form of a shovel blade that is receivable in a slot in the housing of the vehicle, such as a cab portion. The slot is "T" shaped, with the cross bar of the "T" receiving the blade and the stem of the "T" guiding the handle near its connection to the blade.
    Type: Grant
    Filed: May 27, 1982
    Date of Patent: May 22, 1984
    Inventor: Martin Blumenthal
  • Tricycle
    Patent number: D277947
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: March 12, 1985
    Inventor: Martin Blumenthal
  • Riding toy vehicle
    Patent number: D285947
    Type: Grant
    Filed: September 19, 1983
    Date of Patent: September 30, 1986
    Inventor: Martin Blumenthal
  • Toolbox/workshop
    Patent number: D286103
    Type: Grant
    Filed: September 19, 1983
    Date of Patent: October 14, 1986
    Inventor: Martin Blumenthal
  • Toy dump truck
    Patent number: D287522
    Type: Grant
    Filed: September 19, 1983
    Date of Patent: December 30, 1986
    Inventor: Martin Blumenthal
  • Sand toy
    Patent number: D288455
    Type: Grant
    Filed: September 19, 1983
    Date of Patent: February 24, 1987
    Inventor: Martin Blumenthal