FH

Frederick C. Hahn

EG Esco Group: 13 patents #10 of 186Top 6%
Overall (All Time): #358,016 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
D352044 Bucket tooth 1994-11-01
5188680 Method of making tooth point Andrew H. Ulven, James W. Huiras 1993-02-23
5152088 Excavating tooth point and method of replacement 1992-10-06
5074062 Method of replacing a worn excavating tooth point Kirk E. Yoresen, William A. Fewless, Robert K. Emrich, Michael John Secrist 1991-12-24
4727663 Excavating tooth having a lock including a basket spring 1988-03-01
4716668 Excavating tooth point for use with basket spring retainer 1988-01-05
4663867 Locking device for whisler type adapter Larren F. Jones 1987-05-12
4585117 Flight for link chain conveyor 1986-04-29
4577423 Excavating tooth system 1986-03-25
4501079 Two piece cutting edge construction Larren F. Jones 1985-02-26
4470210 Mounting for excavating implement and method 1984-09-11
4428131 Excavating tooth 1984-01-31
4335532 Excavating tooth William R. Barber, Jr., David A. Hampel 1982-06-22
4267653 Locking device for excavating equipment Larren F. Jones 1981-05-19