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Articles & News Tagged “John Ellerbrock”

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John Ellerbrock: The Origins of Seal Check Photo

John Ellerbrock: The Origins of Seal Check

Gates Underwater Product’s John Ellerbrock provides a brief history of vacuum seal checking devices. Now consider de rigueur on most new housing purchases, it is interesting to note that the recent surge in their popularity has suggested that they are a new idea. John points out that filmmakers have been vacuum checking their housings for at least 70 years.

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