Stop cocks for regulating water and gas; stop cocks being safety apparatus for water and gas apparatus

'apparatus':12,17 'cock':2,9 'gas':7,16 'regul':4 'safeti':11 'stop':1,8 'water':5,14

Vials for laboratory use; vials for scientific purposes; laboratory equipment, namely, vial plugs; laboratory equipment, namely, manifolds of glass for vacuum flasks, vials and apparatus in the nature of high vacuum greaseless stopcocks; apparatus in the nature of high vacuum greaseless stopcocks for laboratory use; laboratory glassware; glassware for scientific use

'apparatus':25,34 'equip':10,15 'flask':22 'glass':19 'glasswar':47,48 'greaseless':32,41 'high':30,39 'laboratori':3,9,14,44,46 'manifold':17 'name':11,16 'natur':28,37 'plug':13 'purpos':8 'scientif':7,50 'stopcock':33,42 'use':4,45,51 'vacuum':21,31,40 'vial':1,5,12,23

J YOUNG

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