Patents by Inventor Thomas J. McCracken, Sr.

Thomas J. McCracken, Sr. 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).

  • Telephone accessory device
    Patent number: 6744873
    Abstract: A telephone accessory device includes a first circuit that detects an off-hook condition of a telephone and a second circuit responsive to the first circuit wherein the second circuit simulates an on-hook condition when the off-hook condition is detected.
    Type: Grant
    Filed: January 15, 2000
    Date of Patent: June 1, 2004
    Inventors: Thomas J. McCracken, Sr., William E. McCracken, Sr.