Patents by Inventor Lawrence F. Trodd

Lawrence F. Trodd 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: 4017857
    Abstract: A time accounting system including at least three distinct elements: a magnetic stripped card, a recording clock and a recorder/encoder assembly. The magnetic stripped card is fed into the recording clock which prints and electromagnetically encodes predetermined information such as the date and time upon the card. The card is then output from the recording clock. At the end of a given accounting period, the cards are gathered and stacked in the input portion of the recorder/encoder assembly. The recorder/encoder assembly accepts each card and transfers the information contained onto magnetic tape for direct input to a computer. As each used card is read, the recorder/encoder prints and encodes a new card.
    Type: Grant
    Filed: March 3, 1975
    Date of Patent: April 12, 1977
    Inventors: Howard M. Evans, Jr., Lawrence F. Trodd