Initial patent applications involved in the present case were filed in England, and later, corresponding applications were filed in the United States. In October, 1962, an omnibus continuation-in-part application containing over 450 working examples was filed in the United States. This application eventually issued as the '911 patent, which expired on November 26, 1991.}} | Initial patent applications involved in the present case were filed in England, and later, corresponding applications were filed in the United States. In October, 1962, an omnibus continuation-in-part application containing over 450 working examples was filed in the United States. This application eventually issued as the '911 patent, which expired on November 26, 1991.}} |