Cathodic protection system

Cathodically protected vessel

Cell for measuring the amount of CO in a gas

Ceramic oxygen probe

Chains

Chemical analyzer

Chemical detector utilizing an electrolytic gel

Chemical substance detection apparatus

Chlorine dioxide analyzer

Chromium coating with high hardness capable of resisting wear, s

Circuit integrity tester

Clinical testing apparatus

Closed-loop sputtering system and method of operating same

CO.sub.2 interference free O.sub.2 electrode

Coating film and method and apparatus for producing the same

Coating improvements

Coating infra red transparent semiconductor material

Coating method

Coatings for cutting implements

Coaxial plasma arc vapor deposition apparatus and method