GP

Gerald E. Parker

CE Cedarapids: 6 patents #7 of 43Top 20%
JI Johnson Crushers International: 2 patents #7 of 18Top 40%
Overall (All Time): #666,258 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6032886 Adjustment for rock crusher Daniel C. Drinkwater, Roger M. Clark, David F. Peaks, Gary Heeszel, Randy Orre 2000-03-07
5971306 Gyratory crusher having tramp iron relief system with an annular hydraulic manifold William A. Ganser, IV, Joseph E. Musil, Donald W. Henry, Mark Lawrence Hunt, David A. Ostergaard +5 more 1999-10-26
5950939 Cone crusher for rock Daniel C. Drinkwater, Roger M. Clark, David F. Peaks 1999-09-14
5944265 Gyratory crusher having self-contained lubrication system William A. Ganser, IV, Joseph E. Musil, Donald W. Henry, Mark Lawrence Hunt, David A. Ostergaard +5 more 1999-08-31
5875981 Gyratory crusher having tramp iron relief system William A. Ganser, IV, Joseph E. Musil, Donald W. Henry, Mark Lawrence Hunt, David A. Ostergaard +5 more 1999-03-02
5810268 Gyratory crusher having easily removable mantel stud William A. Ganser, IV, Peter Alford 1998-09-22
5803382 Gyratory crusher having corrugation-like-seal William A. Ganser, IV, Joseph E. Musil, Donald W. Henry, Mark Lawrence Hunt, David A. Ostergaard +5 more 1998-09-08
5718390 Gyratory crusher William A. Ganser, IV, Joseph E. Musil, Donald W. Henry, John C. Vendelin, Peter Alford +2 more 1998-02-17