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US Patent: 1,003,863
Listing Indicator
Patentee: Joseph Arnet (exact or similar names) - Chicago, IL USPTO Classifications: 33/395 Tool Categories: layout tools : levels : pendulum levels Assignees: None Manufacturer: Not known to have been produced Witnesses: Geo. J. Kunter Frank D. Heaslys G. Robert Thomas E. Murdock	Patent Dates: Applied: Feb. 06, 1911 Granted: Sep. 19, 1911 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This is a simple pendulum level designed for use in a boat or airplane to determine the angle of listing in two perpendicular dimensions.

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