KitchenAid Pro Line KPWB100 Use & Care Manual page 6

Always keep a copy of the sales receipt showing the date of
purchase of your Waffle Baker. Proof of purchase will assure you
of in-warranty service.
Before you use your Waffle Baker, please fill out and mail your
product registration card packed with the unit. This card will
enable us to contact you in the unlikely event of a product
safety notification and assist us in complying with the provisions
of the Consumer Product Safety Act. This card does not verify
your warranty.
Please complete the following for your personal records:
Model Number: KPWBIO0
Serial Number
Date Purchased
Store Name