United States patent digest, 1979
Subtitle: Bell Labs.
Contributors: Bell Telephone Laboratories, inc.; Boston Patent Company.
Publisher: Boston Patent Co.
Published: 1980
Place of publication: Needham Heights, Mass. (P.O. Box 55, Needham Heights 02194)
Language: eng
Number of pages: 237
Subjects: Bell Telephone Laboratories, inc; Patents -- United States
Notes: Includes indexes.