An interesting new feature from Google- Patent Search. I tried a couple of items;
Economics Teaching Device
Apparatus For Illustrating Economics
Method For Teaching Economics, Management And Accounting
Method Of Playing A Game Of Economics And Finance
Apparatus For Illustrating Economics By Physical Analogies
Undewear
Fireworks
Finger Puppet
Toothbrush
The picture shows an appratatus for teaching double entry bookkeeping
Related blogs; The Invent Blog, Patent Pending Blog, New Scientist Invention Blog
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