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US Patent: 1,129,988
Sight Glass
Patentee:
Edgar A. Kelsey (exact or similar names) - Mount Vernon, Westchester County, NY

USPTO Classifications:
184/96, 220/663, 73/331

Tool Categories:
industrial tools : tool lubricators : lubricating accessories

Assignees:
Nathan Mfg. Co. - New York, NY

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 21, 1914
Granted: Mar. 02, 1915

Patent Pictures:
USPTO (New site tip)
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Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Nathan Mfg. Co.

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