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Class Numbers & Titles | Class Numbers Only | USPC Index | International | HELP |
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Class 363 | ELECTRIC POWER CONVERSION SYSTEMS |
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![]() | ![]() | 1 | CASCADED OR COMBINED, DIVERSE CONVERSIONS IN WHICH THE FREQUENCY OR PHASE OR COMBINED CONVERSION IS WITHOUT INTERMEDIATE CONVERSION TO D.C. |
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![]() | ![]() | 13 | CURRENT CONVERSION |
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![]() | ![]() | 148 | PHASE CONVERSION (PH1-PH2) WITHOUT INTERMEDIATE CONVERSION TO D.C. |
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![]() | ![]() | 157 | FREQUENCY CONVERSION (F1-F2) WITHOUT INTERMEDIATE CONVERSION TO D.C. |
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![]() | ![]() | 178 | MISCELLANEOUS |
FOREIGN ART COLLECTIONS | ||
FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
Any foreign patents or non-patent literature from subclasses that have been reclassified have been transferred directly to FOR Collections listed below. These Collections contain ONLY foreign patents or non-patent literature. The parenthetical references in the Collection titles refer to the abolished subclasses from which these Collections were derived. | ||
CURRENT CONVERSION |
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