== Eksterne henvisninger ==
* [http://www.cit.uscourts.gov/slip_op/Slip_op00/00-112.pdf ''Rocknel Fastener, Inc. v. United States''] {{Webarchive|url=https://web.archive.org/web/20060404112435/http://www.cit.uscourts.gov/slip_op/Slip_op00/00-112.pdf |date= 4. april 2006 }} – 34 page PDF covering a similar case hinging on the difference between [[screw]]s and bolts. The difference is outlined in a 21 page PDF [http://www.cbp.gov/linkhandler/cgov/trade/legal/informed_compliance_pubs/icp013.ctt/icp013.pdf Distinguishing Bolts From Screws] {{Webarchive|url=https://web.archive.org/web/20090112232820/http://www.cbp.gov/linkhandler/cgov/trade/legal/informed_compliance_pubs/icp013.ctt/icp013.pdf |date=12. januar 2009 }}.
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