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US Patent: 3,902,576
Add-on unidirectional brake
Patentees: Roger W. Pitan (exact or similar names) - Medford, MN Richard M. Biessener (exact or similar names) - Faribault, MN USPTO Classifications: 104/172.2, 16/35R, 188/1.12, 188/29, 188/82.7, 280/1.182 Tool Categories: material handling : dollies, carts and hand trucks Assignees: Nutting Truck & Caster Co. - Faribault, MN Manufacturer: Nutting Truck & Caster Co. - Faribault, MN Witnesses: Unknown	Patent Dates: Applied: Nov. 11, 1974 Granted: Sep. 02, 1975 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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