Patents by Inventor by Alexander Robertson Brackenridge, executor

by Alexander Robertson Brackenridge, executor 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).

  • Paper trimmers
    Patent number: 4046044
    Abstract: A paper trimmer is described comprising a base board and a fixed blade set in one edge of the board, the improvement comprising a guide rail mounted above and closely spaced from the cutter blade and a carriage mounted on the guide rail, the carriage containing a cutter wheel abutting the fixed blade and adapted to be turned, as the carriage is slid on the guide, by engagement of a friction drive wheel coaxial with the cutter wheel on the upper surface of the guide rail.
    Type: Grant
    Filed: November 20, 1975
    Date of Patent: September 6, 1977
    Inventors: Donald MacDougal Paterson, deceased, by Alexander Robertson Brackenridge, executor