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Patents
Patents Assigned to Handy-Stone Corporation
Patents Assigned to Handy-Stone Corporation
Edging block
Patent number:
D378702
Type:
Grant
Filed:
August 9, 1995
Date of Patent:
April 1, 1997
Assignee:
Handy-Stone Corporation
Inventors:
Peter J. Blomquist, Todd P. Strand
Retaining wall block
Patent number:
D391376
Type:
Grant
Filed:
April 12, 1995
Date of Patent:
February 24, 1998
Assignee:
Handy-Stone Corporation
Inventors:
Todd P. Strand, Peter J. Blomquist
Retaining wall block
Patent number:
D429004
Type:
Grant
Filed:
May 10, 1996
Date of Patent:
August 1, 2000
Assignee:
Handy-Stone Corporation
Inventors:
Todd P. Strand, Peter J. Blomquist
Concrete block
Patent number:
D430680
Type:
Grant
Filed:
January 15, 1999
Date of Patent:
September 5, 2000
Assignee:
Handy-Stone Corporation
Inventors:
Peter J. Blomquist, Todd P. Strand