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US Patent: 1,007,424
Trammel head
Patentee: Arvid Bjorklund (exact or similar names) - Minneapolis, MN USPTO Classifications: 33/27.031 Tool Categories: layout tools : compasses : trammels Assignees: None Manufacturer: Not known to have been produced Witnesses: Harry D. Kilgore Bernice G. Wheeler	Patent Dates: Applied: Oct. 03, 1910 Granted: Oct. 31, 1911 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Russ Allen

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