PRT (file format)
From GICLWiki
Program and/or Extension Function: CADKEY Parts File
Company: Kubotek USA Inc.
Specific Notes: CADKEY was a popular CAD 3D wireframe solution for the PC. In late 2003, Kubotek Corporation acquired the CADKEY technology. CADKEY has not been enhanced in quite some time. For CADKEY users there is a community maintained by Kubotek.
MIME Type [What's This?] application/prt application/x-prt image/x-prt
Associated Links: CADKEY Community
Identifying Charactera: (None or Unknown)
Program ID: PartFileType