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US Patent: 536,415
Vacuum-pump
Patentee: John L. Bogert (exact or similar names) - Flushing, NY USPTO Classifications: 261/112.1, 261/76, 261/DIG.012, 417/176, 417/183, 417/185 Tool Categories: Assignees: None Manufacturer: John L. Bogert - Flushing, NY Witnesses: A. M. Oliver George T. Pinckney	Patent Dates: Applied: Sep. 17, 1883 Granted: Mar. 26, 1895 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for John L. Bogert

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