Albert Charles Bartlett was an electrical engineer working for the General Electric Company in Wembley.
He had some correspondence with Wilhelm Cauer on the subject of filter designs.He published a treatment of geometrically symmetrical 2-port networks in 1927 and is responsible for Bartlett's bisection theorem which shows that any symmetrical network can be transformed into a symmetrical lattice network.He also patented the idea of using the method of an active amplifier with "negative resistance" to cancel the inductance of a telephone line.