90257657
Oct 15, 2020
Dec 26, 2023
Active Trademark
Providing on-line chat rooms and electronic bulletin boards for transmission of messages among users in the fields of education, educational courses, and educational course materials; providing on-line chat rooms and electronic bulletin boards for transmission of messages among teachers and students; providing access to online chat classrooms where students and teachers can post, comment, share materials and work with each other
Telecommunications