Coating materials for application to the surface of objects, the coatings including compounds that change colors when the surface includes or comes in contact with specific chemical, biological or toxic chemicals or substances

'applic':4 'biolog':28 'chang':15 'chemic':27,31 'coat':1,11 'color':16 'come':22 'compound':13 'contact':24 'includ':12,20 'materi':2 'object':9 'specif':26 'substanc':33 'surfac':7,19 'toxic':30

Chemical indicators in the form of films or coatings for application to the surface of objects to indicate exposure of the object to chemical, biological or toxic chemicals or substance

'applic':11 'biolog':25 'chemic':1,24,28 'coat':9 'exposur':19 'film':7 'form':5 'indic':2,18 'object':16,22 'substanc':30 'surfac':14 'toxic':27

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