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Hoptroff London

1:51

Hoptroff London Watch Tracks Stocks and Currencies

2:05

Hoptroff's Atomic Watch: It Will Keep Ticking For A Thousand Years

3:42

Hoptroff No.9

3:59

Hoptroff No.14

30:39

Richard Hoptroff: From the Vision to the Atomic Core - SalonQP Seminar 2013

Hoptroff is a provider of distributed timing services, based in London, England.
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