Patents by Inventor Bertrand A. Dreyfus

Bertrand A. Dreyfus 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: 4785357
    Abstract: The invention relates to a pocket-sized device for photocopying small parts of documents. A flat package (1) includes a first face (2) for reading the document by means of a charge coupled device for transferring charges (4, 18) and at least one incremental wheel (6), which as it rolls without sliding on the document furnishes a time base for the reading interval (24). It includes a second face (3) for reading, by means of a matrix printer (12), and at least one incremental wheel (11). At each reading interval, the data are stored in memory (16). For writing, the device is turned over, and the writing wheel (11) controls the transfer of data from memory (16) to the printer (12) via an amplifier-multiplexer (17). Application to taking notes by localized photocopying of a quotation in a text, an equation, or a diagram.
    Type: Grant
    Filed: December 24, 1986
    Date of Patent: November 15, 1988
    Inventors: Bertrand A. Dreyfus, Jaques Godart