Dec. 2, 1999: i-Art Eye3D 4-in-1 now available in USA
i-Art's lawyers came to the conclusion that Tetratel's line-blanking patent holds only in Canada, while the US patent is pending.
Therefore the 4-in-1 is currently available for US residents.
Tetratel claims to have filed the patent on the technology for whole 'North-America' over two years ago. Woobo, manufacturer of VR-Joy, is also in talks with Tetratel over the rights. Both i-Art and Woobo tried to settle the issue by paying royalties, but no decision was made by Tetratel yet.
Thanks to i-Art and Tetratel for keeping me updated.