PB

Per Birch

FL Flsmidth: 1 patents #6 of 42Top 15%
Overall (All Time): #4,057,569 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4403952 Apparatus for driving a rotary drum, such as a rotary kiln Christian Marcussen 1983-09-13