Circular Or Oval In Cross-section Patents (Class D14/228)
  • Combined microphone and shielder
    Patent number: D300821
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: April 25, 1989
    Assignee: Toa Tokushu Denki Kabushiki Kaisha
    Inventor: Hiroshi Kubota
  • Microphone shielder
    Patent number: D300822
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: April 25, 1989
    Assignee: Toa Tokushu Denki Kabushiki Kaisha
    Inventor: Hiroshi Kubota
  • Combined microphone and shielder
    Patent number: D300823
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: April 25, 1989
    Assignee: Toa Tokushu Denki Kabushiki Kaisha
    Inventor: Hiroshi Kubota
  • Combined microphone, stand and shielder
    Patent number: D302158
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: July 11, 1989
    Assignee: Toa Tokushu Denki Kabushiki Kaisha
    Inventor: Hiroshi Kubota
  • Combined microphone and shielder
    Patent number: D302819
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: August 15, 1989
    Assignee: Toa Tokushu Denki Kabushiki Kaisha
    Inventor: Hiroshi Kubota
  • Wireless microphone
    Patent number: D310368
    Type: Grant
    Filed: March 27, 1987
    Date of Patent: September 4, 1990
    Assignee: H.M. Electronics, Inc.
    Inventors: Robert L. Derhaag, Donald A. Kutz