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Stealth mobile search startup announced in a public filing that it’s raised at least $5.1 million.

Backed by tech incubator Idealab — where startups like Picasa and originated — claims it’s “reinventing search for mobile to get people to what they’re looking for more quickly.”

Reached by VentureBeat, Idealab declined to tell us much more than that, and didn’t disclose where the $5.1 million came from — although the filing lists Clearstone Venture Partners’ James Armstrong as a director.

According to a report from the Philippines news site Rappler, Manila-based mobile company Xurpas invested $1 million in, giving the company a roughly $22 million valuation.

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