The certificate for the trademark Dobrosfera®

The certificate for the trademark Dobrosfera®


Patent for the invention of DOME

Patent for the invention of DOME DOBROSFERA

Patent for the invention of DOME DOBROSFERA


Patent for locking the connection in the dome

Patent for locking the connection in the dome, page 1

Patent for locking the connection in the dome, page 2

Patent for locking the connection in the dome, page 3

 


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