Penfield (Pulley) Block Works. See illus. adv. p. 413.
4 to 40 H.P. Steam Engines. See adv. p. 413.
[OFFICIAL.]
INDEX OF INVENTIONS
FOR WHICH
Letters Patent of the United States were Granted in the Week Ending;
June 1, 1880,
AND EACH BEARING THAT DATE.
[Those marked (r) are reissued patents.]