Tunnel boring machine
A Standard patent application filed on 29 June 1990 credited to Forsberg, Jan H
;
Astrand, Nils Manfred
;
Hartwig, Carl Sverker Magnusson
Details
Application number :
57948
Application type :
Standard
Application status :
CEASED
Under opposition :
No
Proceeding type :
Invention title :
Tunnel boring machine
Inventor :
Forsberg, Jan H
;
Astrand, Nils Manfred
;
Hartwig, Carl Sverker Magnusson