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CA Patent: CA-213,309
Clamp for metal pipes
Patentee:
Hugh B. Callander - Guelph, ON Canada

USPTO Classifications:

Tool Categories:

Assignees:
None

Manufacturer:
Rockwell Manufacturing Co. - Pittsburgh, PA
Callander Foundry & Manufacturing Co. - Guelph, ON Canada

Witnesses:
Unknown

Patent Dates:
Granted: Sep. 13, 1921

Patent Pictures:
CIPO Data
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"Vintage Machinery" entry for Callander Foundry & Manufacturing Co.

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