SU   1516588   A1   (21)4159139/31-33   23.10.89   Bul. No.39
D.Vestel and P.Rapoport

Prestressed steel beam

SU   1604947   A1   (21)4640268/23-33   07.11.90   Bul. No.41
D.Vestel and P.Rapoport

Connector for space structure

SU   1636560   A1   (21)4640361/33   23.03.91   Bul. No.11
D.Vestel

Earthquake-resistant many-storeyed structures

SU   1693213   A1   (21)4739159/33   23.11.91   Bul. No.43
D.Vestel and P.Rapoport

Connector for space structure

SU   1724827   A1   (21)4796136/33   07.04.92   Bul. No.13
P.Gruzdov and D.Vestel

Arched structure

SU   1737077   A1   (21)4811869/33   30.05.92   Bul. No.20
D.Vestel and P.Rapoport

Connector for space structure

SU   1742534   A1   (21)4773589/27   23.06.92   Bul. No.23
D.Vestel and P.Rapoport

Connecting device

SU   1749400   A1   (21)4705498/33   23.07.92   Bul. No.27
D.Vestel and P.Gruzdov

Connector for plane structure

SU   1775077   A1   (21)4863278/15   15.11.92   Bul. No.42
D.Vestel and M.Gugushvili

Hydroponic device

SU   1791566   A1   (21)4924433/33   30.01.93   Bul. No.4
D.Vestel

Connector for space structure

SU   1791574   A1   (21)4833854/33   30.01.93   Bul. No.4
D.Vestel and P.Gruzdov

Space structure

SU   1795036   A1   (21)4902404/33   15.02.93   Bul. No.6
P.Gruzdov and D.Vestel

Castellated steel beam

SU   1796765   A1   (21)4940431/33   23.02.93   Bul. No.7
D.Vestel

Earthquake-resistant many-storeyed structures

SU   1798455   A1   (21)4862342/33   28.02.93   Bul. No.8
D.Vestel

Connector for space structure