Stereo Headphones Patent Blueprint Art, HI-FI Poster, Musician Gift, Music Room Decor, Studio Recording, Audio Earphones, Sound Equipment. This patent print features the Stereo Headphones patented in 1979 by G.F Falkenberg. WHY PRINTABLES ARE COOL? Buying printables like the Headphones Patent makes it so fast and easy to print your own wall art and gifts. You don't have to wait days and weeks for your purchase to arrive. Just print it yourself, run down to your local print shop or get them printed online. WHAT YOU WILL RECEIVE Once payment is made Etsy will send you an email with a link to download the files. With this purchase you are going to receive... * 3 - 8x10 inches (300dpi) prints in PNG file format with these backgrounds: - Aged Paper - Chalkboard - Stone White Images can be easily resized up to 16x20 inches without any loss in quality. BTW - If you want different background or size we will ADD them to your order FOR FREE! Just message us with the details. NOTE: * Because you have a digital download the refund option is not available with this purchase. * The colors may look different on the actual print because of monitor and printer color restrictions * NB - Only for personal use, NOT COMMERCIAL. Feel free to print as many copies you want to give away to friends and family but we request you do not resell them in any shape or form...thanks. Thanks for visiting our Etsy shop. Keep coming back as we will be adding new patent prints regularly. We love Patents! Frank and Gayle