• All sections
• F - Mechanical engineering; lighting; heating; weapons; blasting
• F16F - Springs; shock-absorbers; means for damping vibration
• F16F 3/12 - Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of a material having high internal friction, e.g. rubber combined with springs made of steel or other material having low internal friction the steel spring being in contact with the rubber spring, e.g. being embedded in it

Patent holdings for IPC class F16F 3/12

Total number of patents in this class: 76

10-year publication summary

Principal owners for this class