February 22, 2011
These are three images from a specific list of 12. What list?
Cracked by: Raghuvansh , Dibyo , Rogi , vinayaknp , shrey , Siddarth Pai , shrik , Aditya , jowens , dineshk , raklodramA and Ananth
The digest of “Perpetual Motion Gimmicks” maintained by the US Patent Office. All these devices are, evidently, perpetual motion machines that people tried to patent.