EF

Efim A. Freiman

Overall (1982): #67,288 of 81,411Top 85%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4325917 Method and apparatus for producing sapphire tubes Boris B. Pelts, Beniamin A. Tumasian, Leonid P. Egorov, Lev M. Zatulovsky, Petr M. Chaikin +4 more 1982-04-20