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The patent system:     

a.  acts as a direct positive incentive.     
b.  acts as a direct negative incentive.     
c.  acts as an indirect positive incentive.     
d.  acts as an indirect negative incentive.     
e.  does not provide an incentive.

User VanHoesel
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1 Answer

5 votes
i feel like its a. a is the answer
User Roman Jaquez
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