Is FDA a TradeMark ?

A simple google search for FDA approval reveals results as below;

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Best Offer Now! - viagra fda approval - only $1.02 per pill!
Viagra relaxes muscles and increases blood flow to particular areas of the body.viagra fda approval under the name Viagra is used to treat erectile ...
www.wan-press.org/MMITF/downloads/doc/erectile/viagra-fda-approval.html
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Is FDA a Trademark or a QualityMark ?