• All sections
• F - Mechanical engineering; lighting; heating; weapons; blasting
• F16B - Devices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges; joints or jointing
• F16B 21/20 - Means without screw-thread for preventing relative axial movement of a pin, spigot, shaft, or the like and a member surrounding it; Stud-and-socket releasable fastenings without screw-thread by separate parts for bolts or shafts without holes, grooves, or notches for locking members

Patent holdings for IPC class F16B 21/20

Total number of patents in this class: 73

10-year publication summary

Principal owners for this class