Palm was most interested in HP and Companies A and B, while C and D initially only wanted to acquire Palm's patents.

ENGADGET: HP bought Palm after a five-company bidding war

The C-Class Coupe will also be available with a 302-hp six-cylinder engine that gets an estimated 22 mpg.

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Five companies including HP ultimately got to the point of making offers, but only HP is publicly named in the filing -- the other suitors are referred to as Companies A, B, C, and D.

ENGADGET: HP bought Palm after a five-company bidding war