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Patents
Patents Assigned to Louis C. Eitzen Co., Inc.
Patents Assigned to Louis C. Eitzen Co., Inc.
Triple tube viscosity testing instrument
Patent number:
D331202
Type:
Grant
Filed:
August 29, 1991
Date of Patent:
November 24, 1992
Assignee:
Louis C. Eitzen Co., Inc.
Inventors:
David G. Jeffers, Donald G. Pachuta