Calculators; Calculators and calculating machines; Downloadable computer software for the collection, editing, organizing, modifying, book marking, transmission, storage, and sharing of data and information; Electronic calculators; Protective covers adapted for use with HANDHELD COMPUTERS AND MOBILE DEVICES in the nature of tablet computers,

Computer software for the calculation and collection of data; downloadable mobile applications for the calculation and collection of data; downloadable software in the nature of a mobile application for the calculation and collection of data; protective covers and cases for tablet computers; protective display screen covers adapted for use with handheld computers and mobile devices