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11
Speciļ¬ cations
3.02 Versions and subclasses
Version A: ...........................................................................................for sewing light materials
Version B: .................................................................................... for sewing medium materials
Version CN: .......................................................................for sewing medium-heavy materials
Work aids:
Subclass -731/01 .................................................................................................. edge trimmer
Subclass -900/24 ................................................................................................thread trimmer
Subclass -909/14 .................................................................................................Thread trapper
Subclass -910/06 ............................................................................................ automatic foot lift
Subclass -911/37 ................................................................ automatic back-tacking mechanism