• All sections
• F - Mechanical engineering; lighting; heating; weapons; blasting
• F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquids; rotary-piston, or oscillating-piston, positive-displacement pumps
• F04C 14/20 - Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the form of the inner or outer contour of the working chamber

Patent holdings for IPC class F04C 14/20

Total number of patents in this class: 22

10-year publication summary

Principal owners for this class