P
Pellaton (winding system)
ペラトン・ワインディングシステム
比勒顿 （上弦系统）
Pellaton (winding system)
Remontoir Pellaton
Glossary
Thematic
Energy, Technic
The Pellaton automatic winding system was developed by Albert Pellaton, then technical director at IWC, and patented in 1946. The system was further improved in 1950.