The passage focuses on the great efforts that the famous inventors have made.

 Only famous artists and great inventors are considered as creative people. 

Many other inventors had experimented with electric lights before Edison.

68% of the 79 inventors with more than 300 utility paten families are from .

Some inventors develop their ideas very quickly while others spend a lifetime trying to make inventions.

What protects the intellectual property created by inventors? （ ） A: geographical indications B: patents C: copyright D: trademarks E: registered designs

The Wright brothers are _____. A: American aviators, engineers, inventors and aviation pioneers B: a bronze sculpture C: an American statesman D: an American ganster

Economic growth tends to be higher in a country that A: has a low savings rate. B: has an economy open to international trade. C: has an undeveloped system of property rights. D: does not grant patents to inventors.

An invention of an Italian professor A: gave later inventors the idea of moving air around in diving devices. B: can "clean" the air. C: was used to remove moisture. D: was nothing but a plan.

The energy is saved because ______. A: the factory only needs ten people to produce glasses B: in the new way, broken bottles can be used, too C: the inventors received worldwide patent rights to own the process they developed D: the glass is heated to strengthen it