1966:
Bell's Asbestos & Engineering Ltd
Bell's Asbestos Aircraft Products. Ducting, Seals & Insulation
Rec. Num. 37 of 38
Source: Flight September 1st 1966
1967:
Bell's Asbestos & Engineering Ltd
Bell's Asbestos Products. Janitrol Duct Couplings. Flexible Hoses
Rec. Num. 38 of 38
Source: Flight September 21st 1967