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US Patent: 941,531
Manhole Cover Plate
Patentee: Edward Oldman (exact or similar names) - Buffalo, NY USPTO Classifications: 220/245 Tool Categories: Assignees: Farrar & Trefts - Buffalo, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 15, 1909 Granted: Nov. 30, 1909 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Farrar & Trefts

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