Patents by Inventor Ross M. Colquhoun

Ross M. Colquhoun 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).

  • Publication number: 20040129125
    Abstract: A cutting tool such as a saw blade or drill bit, having a cutting portion having a body and one or more cutting tips on the body. A set of markings on the body indicate the distance between the cutting tip and each marking, to indicate to a user the depth of cut to which the tool has penetrated into a workpiece. The markings can be painted, etched, printed, peened on the body or applied in other desired manner.
    Type: Application
    Filed: December 18, 2003
    Publication date: July 8, 2004
    Inventor: Ross M. Colquhoun
  • Patent number: 5562050
    Abstract: An article of furniture such as a table, having four sides connected to each other by corner hinges. Two of the sides are each formed as two halves hinged together and normally rigidified by top rails, and by a horizontal work support panel located between the sides. When the work support panel is lifted and removed from the front, and the top rails are removed, the hinged sides can be folded inwardly so that the table frame assumes a relatively flat configuration. The front side of the table can be formed as two separate pieces, in which case the intermediate hinges in the sides can be removed. The table can also be made in a three-sided configuration, or in a bookshelf or cabinet configuration.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: October 8, 1996
    Inventor: Ross M. Colquhoun
  • Patent number: D265701
    Type: Grant
    Filed: February 13, 1980
    Date of Patent: August 10, 1982
    Inventor: Ross M. Colquhoun
  • Patent number: D273448
    Type: Grant
    Filed: July 14, 1981
    Date of Patent: April 17, 1984
    Inventor: Ross M. Colquhoun
  • Patent number: D375212
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: November 5, 1996
    Inventor: Ross M. Colquhoun