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US Patent: D53,073
Design for a standard for die-sinking machines
Patentee:
Joseph F. Keller (exact or similar names) - New York, NY

USPTO Classifications:
D15/141

Tool Categories:
trade specific : tool and die maker : die sinkers

Assignees:
None

Manufacturer:
Keller Mechanical Engineering Corp. - Brooklyn, NY

Witnesses:
Unknown

Patent Dates:
Applied: Nov. 30, 1917
Granted: Mar. 11, 1919

Patent Pictures:
USPTO (New site tip)
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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Keller Mechanical Engineering Corp.

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