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emmaflott emmaflott
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6 years ago
Patents give inventors the exclusive rights to their inventions for _______________.
 
  a. 20 years
  b. 50 years
  c. 70 years
  d. the inventors lifetime
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JR251203JR251203
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6 years ago
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6 years ago
You make an excellent tutor!
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Thanks for your help!!
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Just got PERFECT on my quiz
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