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US Patent: 909,846
Plumb Bob and Chalk Line Holder
Patentee: William Nelson Cavileer (exact or similar names) - San Francisco, San Francisco County, CA USPTO Classifications: 33/354, 33/370, 33/393, 33/414 Tool Categories: layout tools : levels : plumbs Assignees: William Nelson Cavileer - San Francisco, San Francisco County, CA Frank Logue - San Francisco, San Francisco County, CA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 10, 1908 Granted: Jan. 12, 1909 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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