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US Patent: 481,580
Elevator-controlling mechanism
Patentee: Edwin S. Matthews (exact or similar names) - Cincinnati, OH USPTO Classifications: 187/311 Tool Categories: Assignees: Edwin S. Matthews - Cincinnati, OH James L. Haven - Cincinnati, OH Manufacturer: Not known to have been produced Witnesses: E. A. Belden M. S. Belden	Patent Dates: Applied: Jun. 08, 1892 Granted: Aug. 30, 1892 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for James L. Haven & Co.

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