Who Invented The Burglar Alarm African American

Thus the burglar alarm.

Who invented the burglar alarm african american. 2 4 edwin holmes acquired pope s patent rights in 1857 for us 1500 5 and manufactured the device in his factory in boston massachusetts. He also operated a dance hall and restaurant the harlem casino for a few years taking advantage of the popularity of african american entertainment and music in white communities like groveland. Patent and trademark office m arie van brittan brown felt uneasy in her neighborhood and the police were unreliable. Marie van brittan brown october 30 1922 february 2 1999 was an american inventor.

In 1938 he invented a testing device which determined the viability of radio antennas. Patent 3 482 037 in 1966 along with her husband albert brown. In the same year they jointly applied for a patent which was granted in 1969. He also operated a dance hall and restaurant the harlem casino for a few years taking advantage of the popularity of african american entertainment and music in white communities like groveland.

It was invented by james a. She was the inventor of the home security system u s.