UPDATE: I forgot to mention in the original post, but there are a lot of guitars in the patent prints below…

Would you like a headphone patent on your wall? Good for the next three days and change (from blog-posting date) Massdrop is offering Ink and Screened 18×24 inch Patent Prints for $17 with free US shipping. One of them is the 1981 Jacobsen and Thomsen headphone patent from KOSS [check Google Patents for more details on the actual patent]. The headphone print is just one of the many options.

These will ship in early April 2018 from the vendor and all sales are final.

Massdrop is back with a new fully unlocked promotion on Ink and Screened 18×24 inch Patent Prints for $16 with free shipping each. One of them is the iconic headphone patent from 1981 from KOSS. The headphone is just one of the many options.

These will ship late December 2017, so probably don’t count them to arrive on time as a Christmas gift. All sales are final. The offer runs for the next four days (from blog-posting time).