1920's Technology Inventions

By cbaldwin0406

  • The invention of the lie detector

    The first lie detector was created by a physiologist who was also a police officer named John A. Larson.

  • The invention of the blender

    The blender was invented by a man named Stephen J. Poplawski.

  • The invention of the Audiometer

    A man named Dr. Harvey Fletcher invented the Audiometer. Which can evaluate hearing loss.

  • The vacuum cleaner

    The vacuum has been around for a while but was not very successful until a company called Hoover invented a positive agitation system. This increased cleanly dramatically.

  • The invention of the electronic television

    The electronic television was invented by Philo Taylor Farnsworth.