Alan Hausner

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Cheltenham, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Kaleidoscope with improved objective illumination
- Patent number 5,131,734
- Issue date Jul 21, 1992
- Alan Hausner
- G02 - OPTICS
Information Patent Grant
Puzzle having moveable tiles and transparent retainer
- Patent number 5,060,948
- Issue date Oct 29, 1991
- Alan Hausner
- A63 - SPORTS GAMES AMUSEMENTS