US Patent: 946,919 - Corrugated culvert and process of producing same


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US Patent: 946,919

Corrugated culvert and process of producing same

Patentee:

Arthur A. Koch (exact or similar names) - Albert Lea, MN

USPTO Classifications:

138/154, 285/333, 285/390

Tool Categories:

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Charles E. Paulson

Anna S. Frydenlund

Patent Dates:
Applied:	Mar. 24, 1909
Granted:	Jan. 18, 1910

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Vulcan Iron Works (IA)
Vintage Machinery entry for Grinnell Mfg. Co.

Description:

The inventor owned Grinnell Mfg. Co. and Vulcan Iron Works (both of them in Iowa) at the time this patent was issued; we do not know if either of those businesses manufactured this culvert.