More links describing punched-card-rod retrieval systems.... | i202 Fall 2009

More links describing punched-card-rod retrieval systems....

Wed, 11/04/2009 - 12:51 — dchiang

http://www.computer.org/portal/web/computingnow/annals/extras/cardsvol24...

http://www.freepatentsonline.com/3688900.html

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