Patents by Inventor Charles Lindberg Okerblom

Charles Lindberg Okerblom 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).

  • Billfold protective device
    Patent number: 4050123
    Abstract: This invention relates to an improved means of protecting credit card cases, wallets, and more specifically, pocketbooks of the billfold type against accidental loss or theft by pickpockets without imposing annoying inconvenience to the user or damage or permanent alteration to the billfold, etc.
    Type: Grant
    Filed: February 25, 1976
    Date of Patent: September 27, 1977
    Inventor: Charles Lindberg Okerblom