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Critic of the patent system


spoud74

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In 1995 Richard Stallman, a well-known critic of the patent system, testified in Patent Office hearings that, to test the system, a colleague of his had managed to win a patent for one of Kirchoff's laws, an observation about electric current first made in 1845 and now included in virtually every textbook of elementary physics.

 

A

B. laws, which was an observation about electric current first made in 1845 and it is

C. laws, namely, it was an observation about electric current first made in 1845 and

D. laws, an observation about electric current first made in 1845, it is

E. laws that was an observation about electric current, first made in 1845, and is

 

Please discuss.

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imo A

phrase "an observation about electric current first made in 1845 and now included in virtually every textbook of elementary physics." is correctly modifying "one of the Kirchoff's Laws"

 

B - which does not have clear reference. also "it is" should not be there.

C - "it is" after namely is akward

D - "it" does not have a clear reference.

E - looks like "that" refers to laws, however the verb is singular. Also "first made in 1845" is wrongly modifying "electric current"

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