Combustion engine
German utility model
German Utility Model
http://en.wikipedia.org/wiki/Adsorption; German utility model
http://en.wikipedia.org/wiki/Static_electricity; Patent family of 4 members
http://en.wikipedia.org/wiki/Fullerene
Combustion Engine
http://en.wikipedia.org/wiki/Adsorption
http://en.wikipedia.org/wiki/Fullerene; Patent family with 3 members
Patent family of 2 members
New cage molecules with phthalocyanine; http://en.wikipedia.org/wiki/Phthalocyanine;
http://en.wikipedia.org/wiki/Field_electron_emission
http://en.wikipedia.org/wiki/Field_electron_emission; Patent family with 4 members
http://en.wikipedia.org/wiki/Field_electron_emission; Patent family with 8 members
Patent family with 2 members
Patent family with 9 members
Transportation
Patent family with 4 members
