Patent Number: SU1490074

Publication date: 1989-06-30

Inventor(s): Kalinichenko, Boris S. (SU), Kalashnikov, Nikolaj A. (SU), Kulazhko, Vladimir G. (SU), Shvetsov, Ivan K. (SU)

Applicant(s): Kalinichenko, Boris S. (SU), Kalashnikov, Nikolaj A. (SU), Kulazhko, Vladimir G. (SU), Shvetsov, Ivan K. (SU)

Requested Patent: SU1490074

Application Number: SU19864136646 19861020

Priority Number(s): SU19864136646 19861020

IPC Classification: C01B31/18

EC Classification: C01B31/18

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