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US Patent: 280,713
Leveling Instrument
Patentee:
Ernst A. Bostrom (exact or similar names) - Newnan, GA

USPTO Classifications:
33/291, 33/351

Tool Categories:

Assignees:
None

Manufacturer:
Unknown

Witnesses:
I. T. Reese
A. C. Pease
Patent Dates:
Applied: Mar. 13, 1883
Granted: Jul. 03, 1883

Patent Pictures: [ 1 | 2 ]
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Description:
One of these appeared on Patrick Leach's monthly tool list. This patent was improved on by patent #314,511

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