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Inventor
SCHATTER ECKART
DE
2 patents
Patents
2 patents
US4458146A
Jul 3, 1984
Photoelectric movement detector with varying amplitude light source
SIEMENS AG
7 citations
69
US5019782A
May 28, 1991
Method for determining the qualities and/or frequencies of electrical tuned circuits
SIEMENS AG
13 citations
65