What year was the HP Officejet Pro 8620 e-All-in-One released?
The HP Officejet Pro 8620 e-All-in-One Series was released in 2014, as indicated by the copyright notice from Hewlett-Packard Development Company, L.P. (Page 2)
From the official HP Officejet Pro 8620 E All-in-One Printer manual, page 2
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