Found 3 records, showing 1 of 1 pages
1953:
B.F.Collingridge
B.F.Collingridge Hydraulically Operated Aircraft Passenger Steps
Rec. Num. 1 of 3
Source: Aeroplane September 11th 1953
1953:
B.F.Collingridge
B.F.Collingridge Hydraulically Operated Aircraft Passenger Steps
Rec. Num. 2 of 3
Source: Flight September 11th 1953
1955:
B.F.Collingridge
B.F.Collingridge Hydraulically Operated Passenger Steps
Rec. Num. 3 of 3
Source: Aeroplane September 16th 1955