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US Patent: 744,028
Beam-calipers
Patentee:
Charles E. Billings (exact or similar names) - Hartford, CT

USPTO Classifications:
33/823

Tool Categories:
layout tools : measurement gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
W. C. Abbott
R. N. Pittman
Frederic C. Billings
D. E. Marchant

Patent Dates:
Applied: Mar. 21, 1902
Granted: Nov. 17, 1903

Patent Pictures:
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Google Patents
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