[TheForge] OT A good idea that took a long time to arrive

Kathy keporter at comcast.net
Sun Mar 18 00:38:38 EST 2007


Frosty,
You at least should get a kick out of this. Normally I don't indulge in trips
down memory lane, but this is pretty interesting. How far back would you expect
to find the first auto-darkening welding hood? How about World War Two? 
Mikey

http://www.google.com/patents?vid=USPAT2423320&id=rK1TAAAAEBAJ&pg=PP1#PPP1,M1 




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