-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Method for making silicon rods
-
Patent number 4,312,700
-
Issue date Jan 26, 1982
-
Helictronic Forschungs- und Entwicklungs- Gesellschaft fur Solarzellen-Grunds...
-
Dieter Helmreich
-
C30 - CRYSTAL GROWTH
-
-
-
-
-
-
-
-
-
-
-
3917459
-
Patent number 3,917,459
-
Issue date Nov 4, 1975
-
C30 - CRYSTAL GROWTH
-
3892540
-
Patent number 3,892,540
-
Issue date Jul 1, 1975
-
C30 - CRYSTAL GROWTH
-
3876382
-
Patent number 3,876,382
-
Issue date Apr 8, 1975
-
C30 - CRYSTAL GROWTH
-
3870472
-
Patent number 3,870,472
-
Issue date Mar 11, 1975
-
C30 - CRYSTAL GROWTH