Patents by Inventor David A. Topp

David A. Topp 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).

  • Security clip and methods for package straps
    Patent number: 5655802
    Abstract: Methods and apparatus for securing a strapped carton against pilferage is disclosed. A security clip includes a common member having two or more foldable over and crimpable prongs extending therefrom at right angles to each other. The security clip is applied to cross straps around the carton. A hole may be provided through the clip and cross straps within which a once only lockable member is inserted.
    Type: Grant
    Filed: August 24, 1995
    Date of Patent: August 12, 1997
    Inventors: Mark Topp, David Topp
  • A.C. field measurement system for detecting and sizing defects in a conductor via fixed orthogonal coils
    Patent number: 5574376
    Abstract: An a.c. field measurement testing system for detecting and sizing defects in a conductor includes a probe head having field coils located on a yoke so as to induce an a.c. field in the conductor and sensor coils arranged such that central longitudinal axes of the sensor coils are orthogonal one to another. The coils are wound on a former at the same location on the former and one of the sensor coils is oriented so that a longitudinal axis thereof is parallel to the induced a.c. field.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: November 12, 1996
    Assignee: Technical Software Consultants Limited
    Inventors: David A. Topp, Martin C. Lugg
  • Combination telephone clock and radio set
    Patent number: D278812
    Type: Grant
    Filed: April 19, 1984
    Date of Patent: May 14, 1985
    Assignee: Multi-Tech Industries Corp.
    Inventor: David Topp
  • Combination telephone, clock and radio set
    Patent number: D279900
    Type: Grant
    Filed: July 6, 1984
    Date of Patent: July 30, 1985
    Assignee: Multi-tech Industries Corp.
    Inventor: David Topp
  • Telephone keypad for a combined radio, clock and telephone set
    Patent number: D280099
    Type: Grant
    Filed: July 6, 1984
    Date of Patent: August 13, 1985
    Assignee: Multi-Tech Industries Corp.
    Inventor: David Topp