Patents by Inventor William J. Dopkowski

William J. Dopkowski 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: 4340227
    Abstract: A golf club set comprising a plurality of differing club heads with individual alphanumeric designations and each having an attached shank of predetermined length differing in correspondence with the differing alphanumeric designations of the club heads, a handle including a shaft of predetermined fixed length, and complementary threaded members carried by the shaft and the several club head shanks for releasably attaching the club heads individually to the handle. In a golf club set of predetermined dexterity, either left-handed or right-handed, the angle of twist of the threaded member is opposite to such dexterity such that the threaded members are self-locking in use. The club set also includes a bag with accessory-carrying pouch and adjustable shoulder strap.
    Type: Grant
    Filed: December 1, 1980
    Date of Patent: July 20, 1982
    Assignee: B.P.A. Enterprises, Inc.
    Inventor: William J. Dopkowski