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US Patent: 3,934,657
Dual safety control means for a power tool
Patentee: Irvin R. Danielson (exact or similar names) - Burr Ridge, IL USPTO Classifications: 173/169, 415/904, 418/270, 451/359 Tool Categories: Assignees: Thor Power Tool Co. - Aurora, IL Manufacturer: Thor Power Tool Co. - Aurora, IL Witnesses: Unknown	Patent Dates: Applied: Aug. 01, 1974 Granted: Jan. 27, 1976 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Thor Power Tool Co.
Description: "A safety control means for a portable power tool, such as a pneumatically driven hand grinder..."

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