The American patent system, provided for in the Constitution, was designed to encourage the creation and use of new technology. An inventor would describe the invention, both in writing and with drawings, and __1__ the description with a model to a government official. If the invention was judged to be ___2__ and beneficial, the official would give the inventor a patent. The patent meant that for 14 years the inventor owned the new invention. Inventors could ___3__ their ideas to manufacturers or just use them themselves. The government would not ___4__ any other patent for the same idea, and the inventor could ___5__ anyone of using the patented idea with- out paying the owner of the patent for ___6__ to use it.

　　A useful patent meant that the inventor could make a lot of money. In exchange for this gover- nmental protection, the government published the patent __7___ , which had to provide enough information so that other people could understand the invention—thus adding to the general__8_technological knowledge. And at the end of the 14 years, anyone could use the invention for__9__.The idea behind the patent system was twofold: it would increase the amount of technology, by providing a way for people to make money out of new ideas, and it would make new technology widely available, by publicizing ideas that might ___10__ be kept as trade secrets.

A. license

B. however

C. accuse

D. submit

E. convenient
F. permission

G. enable

H. free

I. specifications

J. yield

K. issue

L. charge

M. available

N) otherwise

O. original