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US Patent: 806,987
Level
Patentee:
Albert F. McDowell (exact or similar names) - Malden, Middlesex County, MA

USPTO Classifications:
33/383, 33/388

Tool Categories:
layout tools : levels : inclinometers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Nov. 04, 1904
Granted: Dec. 12, 1905

Patent Pictures:
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