Patents by Inventor Mark T. Mason

Mark T. Mason 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).

  • Scanner/plotter optical system
    Patent number: 4516023
    Abstract: A laser beam scanner with encoder and a laser beam plotter with encoder are disclosed. The scanner provides for unsharp masking by alternating between a large scan beam and a small scan beam on alternate scans. Compensation for non-straight scan lines is achieved through a small linear galvonometer placed in the scanning optics. An equal conjugate optical system is utilized to allow encoder information to be obtained from a stationary image of the main scanning and plotting galvonometer mirror.
    Type: Grant
    Filed: June 3, 1982
    Date of Patent: May 7, 1985
    Assignee: Klimsch/Optronics
    Inventors: David R. Morrill, Mark T. Mason, Paul M. Green
  • Electronic survey target
    Patent number: 3972622
    Abstract: A target for acquiring a swept light beam in which four light detectors arranged in a row are connected to operate respective illumination devices and also to a logic network which operates an audible signal only upon activation of all four or exclusively the center two detectors. The target includes a housing which attaches to and is movable upon a grade rod.
    Type: Grant
    Filed: September 19, 1974
    Date of Patent: August 3, 1976
    Assignee: New Hampshire Ball Bearings, Inc.
    Inventors: Mark T. Mason, Michael L. Bourgoine