Autodesk ( ADSK) has signed a definitive agreement to acquire Alias, a privately held developer of 3D graphics technology, for $182 million in cash.

Autodesk, a maker of technical design software, including the popular AutoCAD, said the acquisition will bolster its offerings for the design of consumer, media and automotive products.

Announced after the bell Tuesday, the deal is expected to close in the next four to six months.

Alias' revenue was $83 million in the fiscal year ended June 30, 2005.

In after-hours trading, shares were recently up 3 cents to $46.50 on Instinet, having closed the regular session down 27 cents to $46.47.

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