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US Patent: 2,161,989
Flat screen Screening paper pulp
Patentee: Donald M. Waterous (exact or similar names) - Brantford, ON Canada USPTO Classifications: 209/273, 209/357, 209/365.2 Tool Categories: specialty machines : paper making machines Assignees: Waterous, Ltd. - Brantford, ON Canada Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jul. 29, 1936 Granted: Jun. 13, 1939 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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