A patent has been awarded to Microsoft for the page up and page down key function on your keyboard.  The Patent was granted on August 19, 2008 and has been waiting since 2005.  The patent number 7,415,666, documents the working and use of the functions of page up and page down and shows an old IBM keyboard for reference.


"The company received its 5,000th patent from the US Patent and Trademark Office in March 2006, and is currently approaching the 10,000 mark."