Mark Identification

TERRAVISION

Serial Number

74176245

Filing Date

Jun 13, 1991

Registration Date

Dec 1, 1992

Trademark by

HOUGHTON MIFFLIN COMPANY

Classification Information

multimedia, inquiry-based, interactive videodisc/computer software science program covering earth science

Electrical and Scientific Apparatus

printed manuals in the field of earth science for user, student and teacher

Paper Goods and Printed Matter