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US Patent: 491,316
Tool Holder
Patentees:
James E. Low (exact or similar names) - Chicago, Cook County, IL
Magus Dahl (exact or similar names) - Chicago, Cook County, IL

USPTO Classifications:
279/51, 433/129

Tool Categories:
specialty machines : dental apparatus

Assignees:
James E. Low - Chicago, Cook County, IL

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Sep. 22, 1890
Granted: Feb. 07, 1893

Patent Pictures:
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