G01R 1/20 Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
Introduced: September 1968
Full Title
Full titles differ between systems:
Details of instruments or arrangements of the types covered by groups or > Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00 (constructional details particular to arrangements for measuring the electric consumption G01R11/02) > Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
Of 4 combined children, 2 exist in both systems.
2 codes are CPC-only extensions.
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