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| www.colargol.idb.hist.no/~mortenqo/semicond.html | In Norway |
| www.elektronikforum.de/ic-id/ | In Germany, big! |
| www.aufzu.de/semi/gif/ | In Germany |
| www.aufzu.de/semi/gif/stamps.html | Logo's as on the chips |
| www.uspto.gov/tmdb/ | US Patent and Trademark Office, old |
| tess.uspto.gov/bin/gate.exe?f=tess&state=pso0mm.1.1 | US Patent and Trademark Office, new |
| www.cs.unc.edu/~msl/logos/logolist.htm | Logo list |
| www.plasma-online.de/english/identify/picture/index_logomanu.html | Official logo's |
| www.plasma-online.de/english/identify/picture/index_logochip.html | Chip logo's |
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