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US Patent: 622,128
Combined drafting and measuring tool
Patentee:
William C. Day (exact or similar names) - Rumford Falls, ME

USPTO Classifications:
24/486, 33/558.5

Tool Categories:
layout tools : compasses
layout tools : calipers

Assignees:
Willard I. White - Rumford Falls, ME
William C. Day - Rumford Falls, ME

Manufacturer:
National Drafting Tool Co. - Livermore Falls, ME

Witnesses:
H. C. Whitemore
M. R. Billings
Patent Dates:
Granted: Mar. 28, 1899

Patent Pictures: [ 1 | 2 ]
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