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Patents
Patents Assigned to Michael Cohen
Patents Assigned to Michael Cohen
Wall mounted display board for children's toilet training
Patent number:
D308989
Type:
Grant
Filed:
May 14, 1987
Date of Patent:
July 3, 1990
Assignee:
Michael Cohen
Inventor:
Judith A. Cohen
Wall mounted display board for children's toilet training
Patent number:
D316278
Type:
Grant
Filed:
February 27, 1990
Date of Patent:
April 16, 1991
Assignee:
Michael Cohen
Inventor:
Judith A. Cohen
Wall mounted display board for children's toilet training
Patent number:
D330225
Type:
Grant
Filed:
January 15, 1991
Date of Patent:
October 13, 1992
Assignee:
Michael Cohen
Inventor:
Judith A. Cohen
Wall mounted display board for children's toilet training
Patent number:
D341853
Type:
Grant
Filed:
June 29, 1992
Date of Patent:
November 30, 1993
Assignee:
Michael Cohen
Inventor:
Judith A. Cohen
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