Patents by Inventor Michael A. Markwardt

Michael A. Markwardt 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).

  • Ceiling fan
    Patent number: 4720241
    Abstract: A spinner-type electrical ceiling fan having a three part housing which includes a top plate, a central annular band and a bottom plate. The top and bottom plates have depressed, bearing-receiving hubs disposed therein at a central location. An iron armature is secured to the top and bottom plates, with the central annular band snapped into position between the top and bottom plates and around the periphery of the iron armature.
    Type: Grant
    Filed: October 16, 1986
    Date of Patent: January 19, 1988
    Assignee: Encon Industries, Inc.
    Inventor: Michael A. Markwardt
  • Ceiling fan
    Patent number: 4621977
    Abstract: A spinner-type electrical ceiling fan having a three part housing which includes a top plate, a central annular band and a bottom plate. The top and bottom plates are secured to, and movable with, the central annular band, and a plurality of blades are secured to, and project horizontally outwardly from, the bottom plate.
    Type: Grant
    Filed: October 28, 1985
    Date of Patent: November 11, 1986
    Assignee: Encon Industries, Inc.
    Inventor: Michael A. Markwardt
  • Ceiling fan
    Patent number: D285720
    Type: Grant
    Filed: September 12, 1985
    Date of Patent: September 16, 1986
    Assignee: Encon Industries, Inc.
    Inventor: Michael A. Markwardt
  • Combined electric ceiling fan and light or the like
    Patent number: D321933
    Type: Grant
    Filed: October 22, 1990
    Date of Patent: November 26, 1991
    Assignee: Encon Industries, Inc.
    Inventors: Herbert W. Markwardt, Michael A. Markwardt
  • Combined electric ceiling fan and light
    Patent number: D322475
    Type: Grant
    Filed: September 18, 1990
    Date of Patent: December 17, 1991
    Assignee: Encon Industries, Inc.
    Inventors: Herbert W. Markwardt, Michael A. Markwardt
  • Combined electric ceiling fan and light
    Patent number: D328491
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: August 4, 1992
    Assignee: Encon Industries, Inc.
    Inventor: Michael A. Markwardt
  • Combined electric ceiling fan and light
    Patent number: D328785
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: August 18, 1992
    Assignee: Encon Industries, Inc.
    Inventor: Michael A. Markwardt
  • Electrically powered ceiling fan motor housing
    Patent number: D329087
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: September 1, 1992
    Assignee: Encon Industries, Inc.
    Inventor: Michael A. Markwardt
  • Combined electric ceiling fan and light
    Patent number: D333867
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: March 9, 1993
    Assignee: Encon Industries, Inc.
    Inventor: Michael A. Markwardt
  • Combined electric ceiling fan and light
    Patent number: D344129
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: February 8, 1994
    Assignee: Econ Industries, Inc.
    Inventor: Michael A. Markwardt
  • Ceiling fan motor housing
    Patent number: D348512
    Type: Grant
    Filed: September 9, 1992
    Date of Patent: July 5, 1994
    Assignee: Encon Industries, Inc.
    Inventors: Herbert W. Markwardt, Michael A. Markwardt