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PATENT NUMBER 363,875.

PATENT NUMBER 363,875..jpg ThumbnailsSPEED CONTROLLER FOR IMPULSE TURBINES. PATENT NUMBER 2,898,925.ThumbnailsSPEED CONTROLLER FOR IMPULSE TURBINES. PATENT NUMBER 2,898,925.ThumbnailsSPEED CONTROLLER FOR IMPULSE TURBINES. PATENT NUMBER 2,898,925.