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How did granville woods improve the telegraph?

User Evan Frisch
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Answer:

Woods made it possible use the telegraph as a recording device. ... Woods made it possible for moving trains to use telegraphs. Woods made the telegraph lighter and easier to carry around.

User Mironor
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The improvement as a recording device. Woods made it possible for moving trains to use telegraphs. Woods made the telegraph lighter and easier to carry around.
User Akash Singh
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