When an invention is made, the inventor has three possible (1) of action open to him: he can give the invention to the world by publishing it, keep the idea (2) , or patent it.
A (3) patent is the result of a bargain (4) between an inventor and the state, hut the inventor gets a limited period of monopoly and publishes full details of his invention to the public after that period (5) .
Only in the most exceptional circumstances (6) the lifespan of a patent (7) to alter this normal process of events.
The longest extension ever (8) was to Georges Valensi; his 1939 patent for color TV receiver circuit was extended until 1971 because for most of the patent’s normal life there was no color TV to (9) and thus no hope for reward for the invention.
Because a patent remains permanently (10) after it has terminated, the shelves of the library attached to the (11) office contai
A. extending
B. will extend
C. extended
D. to be extended
When an invention is made, the inventor has three possible (1) of action open to him: he can give the invention to the world by publishing it, keep the idea (2) , or patent it.
A (3) patent is the result of a bargain (4) between an inventor and the state, hut the inventor gets a limited period of monopoly and publishes full details of his invention to the public after that period (5) .
Only in the most exceptional circumstances (6) the lifespan of a patent (7) to alter this normal process of events.
The longest extension ever (8) was to Georges Valensi; his 1939 patent for color TV receiver circuit was extended until 1971 because for most of the patent’s normal life there was no color TV to (9) and thus no hope for reward for the invention.
Because a patent remains permanently (10) after it has terminated, the shelves of the library attached to the (11) office contai
A. striking
B. struck
C. to be striking
D. to strike
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