Deciding who invented what is not always straightforward. The best you can do is give credit to whoever filed the patent first. Also, inventions don't often

Deciding who invented what is not always straightforward. The best you can do is give credit to whoever filed the patent first. Also, inventions don't often happen without the prior inventions which make them possible (lens -> telescope, thermionic valve + semiconductors -> transistor), and the social changes which make them inevitable.