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US Patent: 457,077
Attachment for Graduated Rules
Patentee:
Mens A. Dahl - West Orange, NJ

USPTO Classifications:
33/486

Tool Categories:
rules : rule attachments
rules : rule accessories

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Alfred Gartner
Albert A. Schmidt

Patent Dates:
Applied: Oct. 04, 1890
Granted: Aug. 04, 1891

Patent Pictures:
USPTO pdf tiff
Google Patents
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