2019
October – Metso Outotec acquires the Lippmann Group. Manufacturing continued in Milwaukee, Peterborough, and Ireland.
2018
September – Lippmann International Ltd purchases Lippmann-Milwaukee.
1994
Diane Gabriel became CFO of the company
1982
Moved Lippmann Milwaukee, Inc. to its present location in Cudahy, WI
1976
Rock Industries Machinery Corp. fell on hard times and was purchased by the current owners of Lippmann Milwaukee. Since 1976 the Gabriel family changed the name to Lippmann-Milwaukee, Inc.
1972
Edward Lippmann split and formed a new company called Rock Industries Machinery Corp.
1969
Litton Industries moved their operation to Columbia, SC. Litton Industries sold back the original operation to Edward Lippmann and one of his sons.
1962
Hewitt Robbins and Lippmann Engineering Works were purchased by Litton Industries
1960
Lippmann Engineering Works was sold to Hewitt Robbins Manufacturing
1923
Mr. Edward Lippmann founded Lippmann Engineering Works