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GB Patent: GB-185,400,976
Improvements in machinery for crushing quartz and other substances
Patentee: James Hamilton (exact or similar names) - New York, NY USPTO Classifications: Tool Categories: stoneworking : stone crushers Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Granted: May 01, 1854 Patent Pictures: Espacenet patent Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for James Hamilton

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