Chemicals used in industry, science and photography; chemical agents for the coating of electrical contacts

'agent':9 'chemic':1,8 'coat':12 'contact':15 'electr':14 'industri':4 'photographi':7 'scienc':5 'use':2

Common metals and their alloys; common metals, unwrought or semi-wrought; metal coverings for application on electrical contacts, included in this class; plating compositions composed of metal for corrosion and abrasion protection for electrical contacts

'abras':32 'alloy':5 'applic':16 'class':23 'common':1,6 'compos':26 'composit':25 'contact':19,36 'corros':30 'cover':14 'electr':18,35 'includ':20 'metal':2,7,13,28 'plate':24 'protect':33 'semi':11 'semi-wrought':10 'unwrought':8 'wrought':12

Treatment of materials relating to coatings and coverings, namely, application of coatings and coverings on electrical contacts

'applic':10 'coat':6,12 'contact':17 'cover':8,14 'electr':16 'materi':3 'name':9 'relat':4 'treatment':1

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