F-Type 1
F-Type 3
F-Type 4
F-Type 5
F-Type 6
G-Type 1
G-Type 2
G-Type 3
G-Type 4
Fig. 2
Fig. 3 (off-set blade)
Fig. 4
Fig. 5
Fig. 6
Fig.7
Fig.8
Fig.9
Fig.11
Fig.12
Fig.15
