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United States Patent Patent Number : 5,532,527
LEVEL SWITCH
Inventors: Franc Eferl
https://sites.google.com/site/izumiteljeferlfranc/home
All photographs are copyright Ika Zinka Eferl and may not be used without my permission
MarcViskens | 06-Sep-2017 19:31 | |
Neal Nye | 28-May-2013 11:11 | |