ðə tɛknˈiːk dɪdnˌɑːt ɹᵻmˈeɪn sˈiːkɹᵻt ænd wʌz kˈɑːpɪd ɪn dʒˈɜːməni, wˌɛɹ ðɪs ɡlˈæs wʌz nˈoʊn æz bˈeɪn ɡlˈæs.
The technique did not remain secret and was copied in Germany, where this glass was known as bein glass.