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Robert Duane Harr
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Arvada, CO, US
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last 30 patents
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Patent Grant
In-line roller skate with interception of vibrations
Patent number
5,855,383
Issue date
Jan 5, 1999
Tecnica SpA
Robert D. Harr
A63 - SPORTS GAMES AMUSEMENTS
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Patent Grant
In-line skate with full access frame
Patent number
5,765,841
Issue date
Jun 16, 1998
Rollerblade, Inc.
Robert Keith Johnson
A63 - SPORTS GAMES AMUSEMENTS