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PCE
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CPC Subgroup
G04B 3/06

Keys or the like with means preventing overwinding (protecting devices arranged in, or attached to, the barrel G04B1/20; in connection with automatic winding devices G04B1/24 )

Full Title

Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously > Keys or the like with means preventing overwinding (protecting devices arranged in, or attached to, the barrel G04B1/20; in connection with automatic winding devices G04B1/24 )