Patents. Patents.The funniest flops in world history as a memory game

From dog ear muffs to stamp licking machines: From the heyday of patent applications 100 years ago, this memory game brings together 36 patents that, from today's perspective, are quite funny and that, despite their patent numbers, never made it to market. Give the parasol cushion and windshield helmet a second chance when playing memory games! The stimulating and hilarious family memo.