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US Patent: 114,986
Improvement in Adjustable Squares
Patentee: Knud Steen (exact or similar names) - Rochester, NY USPTO Classifications: 33/473 Tool Categories: layout tools : squares rules : folding rules layout tools : bevels Assignees: None Manufacturer: Not known to have been produced Witnesses: Wm. M. Bates N. R. Robinson	Patent Dates: Granted: May 16, 1871 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Russ Allen.
Description: Combined folding rule, square, and T-square utilizing a slotted rule and thumbscrew.

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