Tenaris history

1986: Microsoft stock goes public at $21 per share.

1987: The company's first CD-ROM application, Microsoft Bookshelf, is released.

In 1988 Microsoft surpassed Lotus Development Corporation as the leading software vendor, with more than $500 million in sales.

In 1993 Microsoft introduced Encarta, the first multimedia encyclopedia on CD-ROM, as well as the first version of Windows NT, an operating system for users on corporate networks.

In August 1995 Microsoft launched its next version of Windows, called Windows 95, which sold more than one million copies in the first four days after its release.

1996: The company acquires Vermeer Technologies and its software application, FrontPage.

Additionally, net income rose to $7.79 billion, a dramatic 73 percent increase over 1998.

At the same time, net revenue continued to increase, up 10 percent from 2000.

The launching of Windows Server 2003, the largest software development project in the company's history to date, contributed to the growth.

In April 2004, the company was fined by the European Union for abusing its monopoly on computer operating systems.

Another important development in 2005 was the announcement of a new version of MSN search.

In June of 2006 Owner and Founder Bill gates announced that he would be implementing a two year transition which would remove him from day to day operations while still continuing his role as the chairman, head of directors and as an advisor on their key projects.

2007 brought the launch of Windows Vista as well as 2007 Microsoft Office which would be available to consumers around the world after many delays.

In June of 2009 Microsoft launched their search engine, Bing.

Further product releases in 2011 were the release of Microsoft Office 365 in June of 2011 as well as the acquisition of Skype for 8.5 billion dollars.