Marie Van Brittan Brown invented an early Variation of the trendy dwelling security procedure in 1966 with the assistance of her spouse, Albert. Uncomplicated still really Highly developed for its time, Brown's procedure built usage of peepholes, a closed-circuit camera system, a two-way microphone, and an crisis alarm. Its staff https://poordirectory.com/The-World-Protection-Group-Inc_420691.html