WG

Walter Geffcken

SA Siemens Aktiengesellschaft: 4 patents #3,516 of 22,248Top 20%
Overall (All Time): #1,305,705 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4667130 Flat gas discharge display 1987-05-19
4628228 Gas discharge display device Burkhard Littwin, Rolf Wengert 1986-12-09
4625148 Gas discharge display device with an auxiliary anode control plate 1986-11-25
4527100 Flat color picture reproduction or video display device Burkhard Littwin 1985-07-02