Discover the 25 strangest patents ever filed, from anti-eating masks to pet rock leashes. Explore the USPTO's most bizarre ...
The 1970s were an experimental playground where tech optimism mingled with countercultural quirkiness to yield strange inventions. Some were innovative, some pointless, some disasters. These ...
Discover a collection of unusual DIY inventions that may look strange at first but deliver surprisingly effective results using creativity simple materials and clever ideas to solve everyday challenge ...
Includes drawings of unusual inventions submitted to the patent office with clues to aid the reader in guessing the purpose of each invention.