C - Chemistry – Metallurgy – 25 – B
Inventor
C - Chemistry, Metallurgy
25
B
Inventor
Country: Germany
Analytic process using porous silicon to detect a substance...
Escalator or moving walk with drive
Escalator or moving walk with shaft-bearing and method of...
Escalator or moving walkway with led illumination
Layer with a porous layer area, an interference filter...
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