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A machine using an electric motor to rotate thin, rigid vanes in order to move air, as for cooling.
Keywordsdevice, artifact, fan, instrumentality, artefact
Government Printing Office Official Gazette (Washingon, DC: Government Printing Office, 1912)
2400×684, 227.9 KiB
1024×291, 37.0 KiB
640×182, 19.0 KiB
320×91, 6.8 KiB