Microsoft has been granted a patent on 'Page Up' and 'Page Down' keystrokes.

Posted on Friday, December 26, 2008 @ 22:24:59 PST in Internet
by Raven


By David Meyer ZDNet.co.uk
. Posted on ZDNet News: Aug 29, 2008 7:30:39 AM

The software giant applied for the patent in 2005, and was granted it on August 19, 2008. US patent number 7,415,666 describes "a method and system in a document viewer for scrolling a substantially exact increment in a document, such as one page, regardless of whether the zoom is such that some, all or one page is currently being viewed".

The patent's listed 'inventors' are Timothy Sellers, Heather Grantham and Joshua Dersch. However, Page Up and Page Down keyboard buttons have been in existence for at least quarter of a century, as evidenced by this image of a 1981 IBM PC keyboard.

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