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US Patent: 1,620,253
Lubricator
Patentee: Philetus Warren Gates (exact or similar names) - Chicago, IL USPTO Classifications: 184/55.2, 184/76, 184/87 Tool Categories: industrial tools : lubricators propulsion and energy : internal combustion engines : internal combustion engine lubrication Assignees: Hanna Engineering Works - Chicago, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 27, 1922 Granted: Mar. 08, 1927 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Gates Iron Works "Vintage Machinery" entry for Hanna Engineering Works
Description: Improvements to the lubricators of patents 1,211,431, 1,211,432, and 1,195,349.

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