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Christian Frederick Adolp Bell
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Structures Of Non-Positive Displacement Pumps
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Special Spraying Apparatus
(AREA)
Abstract
18,399. Bell, C. F. A. Aug. 27. Pump valves for use with dirty water &c. The flexible india-rubber &c. flap valve B is connected to its brass &c. seat A by a cross-bar D and screws C.
GB189818399D1898-08-271898-08-27Improvement in Flexible Valves.
ExpiredGB189818399A
(en)