Telegraph Equipment Patents (Class D14/472)
Light pulse type (Class D14/473)
  • Ship's telegraph
    Patent number: D470856
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: February 25, 2003
    Assignee: Stork Kwant B.V.
    Inventor: Joost Constantijn Wulffraat
  • Head-mounted display
    Patent number: D806088
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: December 26, 2017
    Inventor: Masato Hasegawa
  • Telecommunication flashing device
    Patent number: D896196
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: September 15, 2020
    Inventors: Michael Andersen, Bryce Twede, David Lance Pickett, Brett Thelin
  • Double paddle morse code key
    Patent number: D1009881
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: January 2, 2024
    Assignee: SHENZHEN PUTIKE INTERNATIONAL TRADING CO., LTD.
    Inventor: Yonggang Wang