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Ewald Bruencker
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Structures Of Non-Positive Displacement Pumps
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Abstract
2389. Br³ncker, E. Feb. 4. Screw propellers. -The blades, of which there may be two or more, take the form of segments o f a hollow sphere, each being from onesixth to one-fourth of the said sphere.
GB190102389D1901-02-041901-02-04An Improved Propeller for Ships, Aerial Vessels and the like
ExpiredGB190102389A
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