Stencils, paper, stationery, duplicating inks, correcting fluids for stencils, writing and stencilling instruments. Duplicating machines, duplicating apparatus and parts thereof, stands for duplicating machines,

Electrically driven duplicating machines and parts thereof included in this class, apparatus for duplicating writings and drawings, stencils, stencil sheets, paper, stencil ink, correcting and developing fluids, protecting fluids for use with stencils, styles for cutting stencils, file plates, drying books, frames for holding stencils and stencil filing books,

Special apparatus, utensils and fittings of plants for economic utilization of heat and of air-conditioning plants, namely steam-boiler fittings, steam drying apparatus, devices for cooling superheated steam, condensers of steam, oil separators for steam, compensating reservoirs for condensation water, collectors for condensation water, pressure release reservoirs for condensation water, purifiers of condensation water, steam valves for gradual pressure release, thermostatically controlled valves, cocks, slide-valves, mixing valves, non-return valves, non-return flap valves, valves of rapid closing action, pressure-regulating valves, limiters of quanity of flow, multiple-way valves, limiters of cooling water, limiters of return-flow temperature devices for protecting heated water from boiling over, valves protecting from thermosiphon flow, utensils for indication Of water shortage in heating and steam boilers, apparatus, utensils and fittings for pneumatic and hydraulic plants being goods in this class, namely filters, filter-regulators, oil atomizers, oil absorbers, water absorbers, odor absorbing devices, float operated traps for discharging condensation water from pneumatic pipes, pipe and hose couplings comprising shut-off means, utensils for hydraulically and pheumatically controlling and regulating of regulating devices, pressure reducing valves, fittings and utensils for filling and emptying stationary tanks and tank cars containing bitumen or liquid, gaseous or corrosive media, namely special valves for rapid closing action, combined valves for liquid and gas phases, tap valves, tank car bottom valves, and tap valves bottom operated and with heating, pipe breakage check valves, utensils for automatically releasing rapid closing of Blow-down valves and tank car valves, apparatus, utensils and fittings for simultaneously filling or emptying all the tank cars of a tank car train; waste water disinfectant plants

Electrical measuring apparatus; measuring apparatus and instruments for liquids, gases and vapors; checking (supervision) apparatus and instruments; signalling apparatus and instruments including monitoring- and control-devices as well as electric, pneumatic regulators and governors; control appliances for use in continuous desalination; thermostats,

Installations for heating, for steam generation, for cooking, refrigerating, drying, ventilating, for water supply and for sanitary purposes; valves; automatic control valves, valves for heaters (radiators) with or without the control mixing valves, mixing traps, desalination_ and elutriation-valves, cocks for manual, mechanical and automatic operation, applicances for continuous desalination, reduction valves, pressure regulators, water_ and steamcleaner all for use in such installations; apparatus and applicnces for circulating ssteam in heating and boiling apparatuus, apparatus and appliances for the utilisation of the heat contained in vapors, steam traps; apparatus and instruments, dirt traps and filters for purifying flowing media by the separation of solids all for use in such installations; apparatus and appliances for conducting, stopping controlling and observing liquids, gasses amd vapors