Mich. Comp. Laws § 570.543: Special tools; unclaimed possession; transfer of rights from customer to end user; destruction.

Sec. 3.

Unless otherwise agreed in writing, if a customer does not claim possession of a special tool from the end user within 3 years from the last use with that end user of the special tool, all rights, title, and interest in the special tool may, at the option of the end user, be transferred by operation of law to the end user for purpose of destroying the special tool.