Y10 - technical subjects covered by former uspc. Y04 - information or communication technologies having an impact on other technology areas. Y02 - technologies or applications for mitigation or adaptation against climate change. + Y - new / cross sectional technologies. H99 - subject matter not otherwise provided for in this section. H05 - electric techniques not otherwise provided for. G99 - subject matter not otherwise provided for in this section. G16 - information and communication technology specially adapted for specific application fields. F99 - subject matter not otherwise provided for in this section. F17 - storing or distributing gases or liquids. F05 - indexing schemes relating to engines or pumps in various subclasses of classes f01-f04. F04 - positive - displacement machines for liquids. E99 - subject matter not otherwise provided for in this section. E06 - doors, windows, shutters, or roller blinds in general. E01 - construction of roads, railways, or bridges. D99 - subject matter not otherwise provided for in this section. 
D10 - indexing scheme associated with sublasses of section d, relating to textiles.
D06 - treatment of textiles or the like.D01 - natural or man-made threads or fibres.C99 - subject matter not otherwise provided for in this section.C25 - electrolytic or electrophoretic processes.C11 - animal or vegetable oils, fats, fatty substances or waxes.C10 - petroleum, gas or coke industries.C02 - treatment of water, waste water, sewage, or sludge.B99 - subject matter not otherwise provided for in this section.B67 - opening, closing bottles, jars or similar containers.
B63 - ships or other waterborne vessels.B62 - land vehicles for travelling otherwise than on rails.B33 - additive manufacturing technology.B31 - making articles of paper, cardboard or material worked in a manner analogous to paper.B27 - working or preserving wood or similar material.B21 - mechanical metal-working without essentially removing material.B06 - generating or transmitting mechanical vibrations in general.B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes.
B03 - separation of solid materials using liquids or using pneumatic tables or jigs. B02 - crushing, pulverising, or disintegrating. B01 - physical or chemical processes or apparatus in general. A99 - subject matter not otherwise provided for in this section.
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