Trade Name

Material

Manufacturer

Omegite

PF

Brit. Dyestuffs Corp. Ltd., Manchester, UK

Opal

PF

Kunstharzfabrik, Fr. Pollak, Vienna, Austria

Orlak

PF

Chance Bros. & Co., West Smethwick, UK

Ornalith

PF

Herold AG, Hamburg, Germany

Orolithe

CA

Soc. D’Orolith, Rueil, France

Orthospan

CA

Medical Supply Assoc. Ltd., London, Uk

Oxygalalith

CS

France

Oyocetil

CA

Soc. L’Oyonnaxienne, Oyonnax, France

Oyogalithe

CS

Soc. L’Oyonnaxienne, Oyonnax, France

Oyonnithe

Cs

Soc. Petit-Collin-Oyonnithe, Paris, France