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Scientific American, Vol. 61, No. 12 (1889) (1889)
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itish government. These boats have many features ways. For further information relative to this invention the rods to normally hold the valve on its seat, but of novelty, being of a much improved type when com- address Messrs. Little & Hamilton, No. 386 West 125th permitting it to open inward. Each… … WRAY’S LOCK JOINT FOR BEAMS, ing this new danger to vestibule trains. © 1889 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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