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US Patent: 148,222
Improvement in altitude-instruments
Patentee: Harvey Linton (exact or similar names) - Brookville, PA USPTO Classifications: 356/148 Tool Categories: layout tools : levels : inclinometers Assignees: None Manufacturer: Unknown Witnesses: Alfred Walter W. F. Moore	Patent Dates: Applied: Oct. 25, 1873 Granted: Mar. 03, 1874 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Russ Allen
Description: An example appeared on ebay marked Pat'd by Harvey Linton March 3rd 1874 Manuf. by Wm. E. Stieren PITTSBURGH, PA

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