Patent family with 8 members; Cooling system related
Nuclear plant (Part 2)
Patent family with 5 members
Patent family with 8 members
Electrical device check
Patent family with 7 members
Cleaning filters
Electricity distribution
Repair on electrical power lines
Heliostat
Working with membranes
http://en.wikipedia.org/wiki/Electrolysis
Electrode related invention
Hydride
Patent family with 2 members
http://en.wikipedia.org/wiki/Magnetic_flux; Patent family with 8 members
http://en.wikipedia.org/wiki/Heliostat; Patent family with 5 members
