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US Patent: 1,432,362
Electromagnetic Power Anvil Block for Riveting
Patentees: Paul G. Sigond, deceased (Estate of) (exact or similar names) - San Francisco, San Francisco County, CA Marguerite Sigond, Administratrix (exact or similar names) - San Francisco, San Francisco County, CA USPTO Classifications: 29/243.54, 72/430 Tool Categories: specialty tools : riveting tools Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 04, 1921 Granted: Oct. 17, 1922 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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