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Alex Wortman
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Ann Arbor, MI, US
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last 30 patents
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Patent Grant
Three point cross-legged support seat
Patent number
5,374,109
Issue date
Dec 20, 1994
Alex Wortman
A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information
Patent Grant
Bowling alley recessed rail deflector
Patent number
5,322,476
Issue date
Jun 21, 1994
Alex Wortman
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Grant
Deflecting cushion for bowling alley
Patent number
5,154,418
Issue date
Oct 13, 1992
Alex Wortman
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Grant
Sport striking articles
Patent number
5,150,897
Issue date
Sep 29, 1992
Alex Wortman
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Grant
Convertible bowling alley
Patent number
4,420,155
Issue date
Dec 13, 1983
Zena Sheinberg
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Grant
Convertible bowling alley
Patent number
4,330,122
Issue date
May 18, 1982
Sheinberg; Zena
Zena Sheinberg
A63 - SPORTS GAMES AMUSEMENTS