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George Guest
Emery Smith
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Individual
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Individual
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Publication of GB190716535ApublicationCriticalpatent/GB190716535A/en
16,535. Guest, G., and Smith, E. July 19. Lift valves; seats. -A lift valve consists of a loose conical valve e fitted in a screwed spindle f and adapted to seat in a conical hole in a removable seat g, which is held in position by a perforated cup d attached to the gland of the valve a.