Check Yourself — Lesson 3

Answers to Exercise 3

Create search strategies for the following searches:

1. Find U.S. patent number 4,378,441. (Use ONTAP CLAIMS, File 279).
   
   b 279
   e pn=us 4378441
   s E number
   
   
2. What other country issued a patent for U.S. patent 4,872,715? (Use ONTAP Derwent World Patents Index, File 280).
   
   b 280
   e pn=us 4872715
   s E number
   
   
3. Find German patent 3335908. (Hint: the country code is DE) (Use ONTAP Derwent World Patents Index, File 280).
   
   b 280
   e pn=de 3335908

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