Werner von Siemens Dial telegraph Morse's telegraph Telephone Carbon-arc lamp Electrical tramway Dinamo Vacuum cleaner Tantalum lamp The PROTOS cars Radio-receiver Circuit breakers Television High-purity silicon Ultrasonic scanner ISDN MultiMediaCard Fingertip sensor  Screensaver

The Gallery of Technological wonders High-purity silicon In 1953 Siemens became the first company to succeed in producing high-purity silicon. The same feat was achieved almost simultaneously by researchers working independently in America. Siemens was granted a patent on its non-crucible technique of growing silicon crystals in 1953.   Siemens S.p.A. 1999 - Milano Communication and Marketing Reproduction and use of the images and texts are prohibited.