Patents by Inventor Joel B. Slobin

Joel B. Slobin 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).

  • Two-date reminder
    Patent number: 4308678
    Abstract: The present invention provides a visible reminder of two dates which the user selects by rotatably adjusting at least one pair of concentric discs carrying inner and outer circular date scales which cooperate with corresponding reference marks to designate the selected dates.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: January 5, 1982
    Inventor: Joel B. Slobin