Application for Czechoslovak patent was filed on 8 November 1990, the patent was approved on 26 October 1992, and ut was patented in USA on March 16,1993, with patent number US5,193,809.
On March 16,1993, it was patented in the USA with patent number US5,193,809. Application for Czechoslovak patent was filed on 8 November 1990, the patent was approved on 26 October 1992.
Application for Czechoslovak patent was filed on 8 November 1990, the patent was approved on 26 October 1992. On March 16,1993, it was patented in the USA with patent number US5,193,809.
Application for Czechoslovak patent was filed on 8 November 1990, the patent was approved on 26 October 1992. On March 16,1993, it was patented in the USA with patent number US5,193,809.