Warbird Information Exchange

I'm looking for any and all info on WWII static dischargers. ONLY WWII, not any that are currently used on restored aircraft. I know that testing and experiments on stopping static discharge, causing radios to receive "hash" began shortly before WWII, and the Army-Navy Precipitation Static Project began in about 1943 to study the phenomenon. Also, two companies declare they built static discharges during the war; Dayton-Granger ( founded in 1943 ) says it developed the first one, and Astatic Corporation claim to have built many for the Army and Navy.

Looking for any technical literature, illustrations, drawings, pictures, etc of these devices on WWII planes, during the war. I know all planes have them now, but looking for what they looked like, how and when first installed, on what aircraft, and so on during the war.

_________________
SHAEF1944
American Veterans Museum

Might start with these from 1943:

http://www.freepatentsonline.com/2333144.html
http://www.freepatentsonline.com/2320146.html
http://www.freepatentsonline.com/2309584.html

And here is one from 1922:

http://www.freepatentsonline.com/1419261.html