News Search results: Pneumatic barrier
Robert C. Brush, Mattoon, Illinois, for a "pneumatic grain conveying ... Roy Skotty, Elmhurst, Illinois, for the "movable barrier hydraulic braking
TMC Net · Jul. 25, 2014
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... precision hydraulic power unit or a precision pneumatic power system. ... At the entrance to the embassy, the barrier creates a sally-port with ...
Security Magazine · Jul. 22, 2014