Description: Patent for a new and improved pest control device. This design "consist[s] of the flexible air-supply funnel, having end-supporting and mouth-distending rim, terminating in vertical bottom legs or branches, the gas generator, the air-inlet tube having the valve, and the rigid gas-discharge tube" (lines 22-28).
Date: December 25, 1883
Creator: Grafton, William
Item Type: Refine your search to only Patent
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