The mark consists of the letters "SF" set within an array of diagonal lines of decreasing thickness from left to right and arranged to form a rectangle, where the left portion of the "S" and "F" are set in front of the lines and the right portion set behind the lines.
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1
Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry; unprocessed artificial resins, unprocessed plastics; manures; fire extinguishing compositions; tempering and soldering preparations; chemical substances for preserving foodstuffs; tanning substances; adhesives used in industry.
filtering materials, namely, unprocessed plastics, mineral substances, and chemical preparations for industrial manufacturing
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7
Machines and machine tools; motors and engines (except for land vehicles); machine coupling and transmission components (except for land vehicles); agricultural implements other than hand-operated; incubators for eggs.
filters for motors and engines; filtering machines for chemical processing; filters being parts of manufacturing industry machines
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10
Surgical, medical, dental and veterinary apparatus and instruments, artificial limbs, eyes and teeth; orthopedic articles; suture materials.
filters for medical, dental, and veterinary purpose, namely, blood filters, air filters for medical ventilators, implantable blood filters made of artificial materials, and filters for anesthesia
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11
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes.
air filtering installations; water filtering installations, namely, water filters, and filters made of fiber for water filtration
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16
Paper, cardboard and goods made from these materials, not included in other classes; printed matter; bookbinding material; photographs; stationery; adhesives for stationery or household purposes; artists' materials; paint brushes; typewriters and office requisites (except furniture); instructional and teaching material (except apparatus); plastic materials for packaging (not included in other classes); printers' type; printing blocks.
filter paper
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17
Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, not of metal.
filtering materials made of synthetic materials, namely, semi-processed plastics in the nature of filtering materials in the manufacturing industry, in the construction industry, in the agriculture industry, in the pharmaceutical industry, in the oil and fuel industry
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21
Household or kitchen utensils and containers; combs and sponges; brushes (except paint brushes); brush-making materials; articles for cleaning purposes; steelwool; unworked or semi-worked glass (except glass used in building); glassware, porcelain and earthenware not included in other classes.
filtering materials, namely, filtering materials made of cellular glass and cellular glass particles for use as a filtering media for hydraulics, transmissions and air treatment