Various photographs about the Axial - Flow Thayer valve.

itajournal1998_small.jpg wereitallbegan_small.jpg barbaraandedthayer1998_small.jpg
firstscetch1947_small.jpg edthayersworkshop_small.jpg thayervalvedemonstrationset_small.jpg
brassdemonstration1979_small.jpg firstconicalafvalve1981_small.jpg cooneshapedvalve1982_small.jpg
demovalve_small.jpg basstromboneset_small.jpg uspattent1978_small.jpg
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