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US Patent: 2,161,989
Flat screen
Screening paper pulp
Patentee:
Donald M. Waterous - 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 pdf tiff
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