Apple has registered two dozen new patents.

Apple has received approximately 20 patents filed with the United States Patent and Trademark Office between 2007 and 2010.

These patents cover various areas of the modern computer market; most relate to software, while others relate to hardware. It's worth noting that the company's employees deliberately conceal the specific technologies covered by the patents.

However, details of three patents have emerged. One of them describes integrated touchscreen display technology, specifically the operating principles of touchscreens.

The second patent is related to the use of voice mail – it describes an improved interface for this service, the third will be used in desktop computers, it describes the technology for instantly connecting various expansion cards to the computer.