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US Patent: 1,809,553
Tool Holder
Patentees:
Herrmann M. Graul, deceased (Estate of) (exact or similar names) - Detroit, Wayne County, MI
Edith P. Graul, Administratrix (exact or similar names) - Detroit, Wayne County, MI

USPTO Classifications:
279/89, 279/93, 30/342, 470/205

Tool Categories:
industrial tools : tool holders

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Mar. 25, 1926
Granted: Jun. 09, 1931

Patent Pictures:
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