If you have the original DVD box, the product key is usually printed on a sticker inside the case or on the back of the sleeve. For downloadable versions, the key was in a Readme.txt file within the download folder.
Autodesk offers a cross-grade discount for legacy license owners. While subscription-only now, it is the only legal way to access modern .DWG files without conversion. product key of autocad 2013
AutoCAD 2013 is a legacy version. Autodesk has moved to a subscription model, and support for activating older versions may be limited. If you encounter activation errors, you may need to contact Autodesk Support system requirements for running AutoCAD 2013 on modern versions of Windows? View your product license information - Autodesk If you have the original DVD box, the