Jon K. Alexandres

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Mason City, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Golf putting vent with adjustable ramp
- Patent number 10,737,166
- Issue date Aug 11, 2020
- Jon K. Alexandres
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Golf vent with ball return
- Patent number 6,193,613
- Issue date Feb 27, 2001
- Jon K. Alexandres
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Golf vent
- Patent number 5,997,407
- Issue date Dec 7, 1999
- Jon K. Alexandres
- A63 - SPORTS GAMES AMUSEMENTS