Does Daguerre support the country to obtain the patent right of optical photography?

Daguerre believes that if the invention patent right is owned by individuals, it will inevitably affect the interests of society, and it should be supported by state acquisition and announced to the world. 1839, the French government bought the invention patent right, and on August 15, Daguerre's optical photos were publicly displayed at the joint meeting of French Academy of Sciences and Academy of Fine Arts. 19 In August, the French government officially announced the details of the silver photography law, and Daguerre published a 79-page manual.