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US Patent: 1,871,856
Trenching machine
Patentee: Jason H. MacDonald (exact or similar names) - Milwaukee, WI USPTO Classifications: 180/53.1, 37/361 Tool Categories: Assignees: C. H. & E. Mfg. Co. - Milwaukee, WI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 14, 1930 Granted: Aug. 16, 1932 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for C. H. & E. Mfg. Co.

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