There was a post recently that mentioned the Raytheon CK-722 and the fact it was the first low cost transistor available for general sale.
That got me interested since I had never read any thing on that before.
Here are some links with some good info.
Some things I did not know............
The 722 and 721 were actually 718's that did not meet spec. They were rebranded and sold at a lesser cost. What is interesting is Raytheon was apparently one of, if not the first to do this (1953).
Original cost was $7.60 but fell to $.99 by 1956.
Raytheon actively supported and encouraged the amateur market.
The designer was Norman Krim who graduated MIT and started working for Raytheon in 1933 for $.50 / hour. He worked for the company until 1997. He also was the CEO of Radio Shack from 1961-1963.
Links
Raytheon CK-722 Wikipedia.
http://en.wikipedia.org/wiki/CK722Norman Krim Wikipedia.
http://en.wikipedia.org/wiki/Norman_KrimThe CK722 Museum.
http://www.ck722museum.com/The Semiconductor Museum.
http://semiconductormuseum.com/Museum_Index.htmLots of good reading. A lot of interesting other links on these sites too.