3 ms·
You can look them up in the patent which also explains in pretty good detail how the process works: https://patents.google.com/patent/DD157966A3 https://patents
by aeyes 2y ago
You can look them up in the patent which also explains in pretty good detail how the process works: https://patents.google.com/patent/DD157966A3 https://patents.google.com/patent/DD157966A3
- lukan 2y agoSo Siegfried Schelinski, Dieter Patzig, Klaus Heinrich and Bernd Grueger did the main work inventink the "unbreakable" drinking glass. Just for the record.