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US Patent: 3,757,683
Compactor drive chain tensioning apparatus
Patentees: Ernst Grunewald (exact or similar names) - Troy, OH Einar O. Engerbretsen (exact or similar names) - Troy, OH USPTO Classifications: 100/229A, 100/278, 100/290, 474/134, 474/135, 474/86 Tool Categories: Assignees: Hobart Mfg. Co. - Troy, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 09, 1972 Granted: Sep. 11, 1973 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Hobart Mfg. Co.

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