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G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
G06M1/00—Design features of general application
G06M1/04—Design features of general application for driving the stage of lowest order
G06M1/06—Design features of general application for driving the stage of lowest order producing continuous revolution of the stage, e.g. with gear train
G06M1/062—Design features of general application for driving the stage of lowest order producing continuous revolution of the stage, e.g. with gear train for drum type indicating means