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US Patent: 632,286
Plumb Bob
Patentee: Albert A. Snebold (exact or similar names) - Natrona, PA USPTO Classifications: 33/393 Tool Categories: layout tools : plumb bobs Assignees: None Manufacturer: Not known to have been produced Witnesses: John Groetzinger H. E. Becker	Patent Dates: Applied: Mar. 27, 1899 Granted: Sep. 05, 1899 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Russ Allen.
Description: Suspension cord is kept within the bob and can be extended/retracted by twisting a serrated collar.

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