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US Patent: 2,963,792
Micrometric Head
Patentee: Pierre Marcel Roch (exact or similar names) - Rolle, Vaud, Switzerland USPTO Classifications: 33/816 Tool Categories: layout tools : measurement gauges Assignees: Pierre Roch S.a.r.l. - Rolle, Vaud, Switzerland Manufacturer: Not known to have been produced Witnesses: none listed	Patent Dates: Applied: Aug. 18, 1959 Granted: Dec. 13, 1960 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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