Patents by Inventor Ludolf Klein

Ludolf Klein 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).

  • Key case
    Patent number: 4062212
    Abstract: A key case having a body portion in which a key carrier assembly is mounted having key retainers releasably mounted thereon, a tab member being interconnected to the body portion and extending outwardly therefrom, and a key that is used frequently being releasably interconnected to the tab member and being removably located in an exterior pocket formed as part of the body portion.
    Type: Grant
    Filed: June 1, 1976
    Date of Patent: December 13, 1977
    Assignee: Richton International Corporation
    Inventor: Ludolf Klein
  • Cigarette case with lighter compartment
    Patent number: D274155
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: June 5, 1984
    Assignee: Richton International Corporation
    Inventor: Ludolf Klein
  • Combination stationery holder and pocket secretary
    Patent number: D303809
    Type: Grant
    Filed: March 3, 1986
    Date of Patent: October 3, 1989
    Assignee: Bond Street, Ltd.
    Inventor: Ludolf Klein