
Michigan spinout Vesper's investors include Amazon's Alexa Fund, AAC Technologies, Mirae Nano Tech and XinGang Electronics.
The life sciences and tech commercialisation company sold 17 million new shares to investors including Woodford, which contributed $19m.
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The US-based wireless infrastructure technology developer and University of Texas spinout has also named board member Cole Brodman as its new chief executive.
Facebook acquired the face recognition software developer, which spun out of Carnegie Mellon University last year, for an undisclosed sum.