The Mass approved in 1984 was the Book of Divine Worship, which was published for Episcopalians who entered the Catholic Church through the Pastoral Provision. It was set up in 1980 by Pope John Paul II for Episcopalians to enter the Church while retaining their unique liturgical expressions and pastoral practices (e.g. allowing their married priests to be ordained Catholic priests if they brought their congregations with them). It was effective only the United States, AFAIK. It still remains active even today.
Those who entered the Church through the Pastoral Provision entered through their territorial dioceses, and Pastoral Provision parishes were parishes of the diocese, under the authority of the local diocesan bishop. The Book of Divine Worship was what was approved for their use.
When the Ordinariates were formed, work was started on a Use of the Roman Rite for their use. While this work was in progress, the BDW was also permitted for their use on an interim basis, as was the Anglican English Missal (with corrections from Rome). When the Ordinariate Use was approved in 2013, permission to use the BDW and all other missals were withdrawn, and the new Ordinariate Use Mass is effective for Ordinariates worldwide.