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CA Patent: CA-133,141
Corrugated culvert and process of producing same
Patentee:
Arthur A. Koch (exact or similar names) - Albert Lea, MN

USPTO Classifications:

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jan. 18, 1911
Granted: May 16, 1911

Patent Pictures:
CIPO Data
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Grinnell Mfg. Co.
Vintage Machinery entry for Vulcan Iron Works (Mason City, IA)
Description:
This is the Canadian equivalent of US patent 946,919.

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.

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