Patents by Inventor Esko Kullerno Karkas

Esko Kullerno Karkas 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).

  • Pin cushion and method of making same
    Patent number: 3933286
    Abstract: A pin cushion and a simple method for making same are disclosed, the pin cushion being adapted to conveniently engage the wrist or arm of a wearer and having protective side walls engaging the cushion material. The pin cushion is formed by heating and bending substantially cruciform shaped thermoplastic sheet material into a holder having an upwardly extending channel and downwardly extending jaws which can clamp the arm or wrist of a user, the cushion material being inserted into the channel.
    Type: Grant
    Filed: January 29, 1974
    Date of Patent: January 20, 1976
    Inventor: Esko Kullerno Karkas