How can I extend the HP Limited Warranty on my Ink Tank 110?
You can extend the HP Limited Warranty by registering your product within 90 days of purchase, either by visiting register.hp.com or by contacting HP customer support. Upon completion of registration, the warranty will be extended for the period stated on www.hp.com/support for your country and product model. (Page 4)
From the official HP Ink Tank 110 manual, page 4
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