United States patent digest, 1979
Subtitle: class 271, sheet feeding or delivering.
Contributors: Boston Patent Company.
Publisher: Boston Patent Co.
Published: 1981
Place of publication: Needham Heights, Mass. (P.O. Box 55, Needham Heights 02194)
Language: eng
Number of pages: 123
Subjects: Feed mechanisms -- Patents.; Conveying machinery -- Patents.
Notes: Includes indexes.