If no development is going to be performed on this build machine, you're free to either install the controls on the machine using an active Telerik license or simply copy the needed dlls - whichever you find more suitable.
You can read more about the specific rights the Telerik license grants you in the License Agreement
. More specifically, I believe you're interested in point 1.3 - License for Redistribution
Please let me know if this information clarifies your concerns. If any further questions arise, do not hesitate to contact me again.
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