Patents by Inventor Alfred De Vries

Alfred De Vries 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).

  • Laser pistol and method or system for retrofitting sharpshooting pistols
    Patent number: 6682350
    Abstract: A laser pistol and a method or system for retrofitting sharpshooting pistols whose recoil mechanism is complicated in design and has an unrealistic trigger resistance. A conversion of known sharpshooting pistols into simulation-type laser pistols, whose mechanism has a realistic trigger resistance and a corresponding recoil, and their simple reconversion is provided.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: January 27, 2004
    Inventors: Hermann Kehl, Alfred De Vries
  • Laser pistol and method or system for retrofitting sharpshooting pistols
    Publication number: 20020194765
    Abstract: A laser pistol and a method or system for retrofitting sharpshooting pistols whose recoil mechanism is complicated in design and has an unrealistic trigger resistance. A conversion of known sharpshooting pistols into simulation-type laser pistols, whose mechanism has a realistic trigger resistance and a corresponding recoil, and their simple reconversion is provided.
    Type: Application
    Filed: May 31, 2002
    Publication date: December 26, 2002
    Inventors: Hermann Kehl, Alfred De Vries