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Miscellaneous U.S. elevator patents (1880)
leaf 867
J. B. MoKEOWN. ELEVATOR LOCK. APPLICATION FILED SEPT. 10, 1909. Patented Apr. 25, 1911. 990,281. … TtfE NO&RIS PETERS CO., WASHINGTON, D. C.Elevators
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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