Phonograph (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Phonograph" in German language version.

refsWebsite
Global rank German rank
800th place
160th place
9th place
9th place
1,999th place
2,709th place
135th place
165th place
66th place
4th place

espacenet.com

worldwide.espacenet.com

  • Patent US200521: Phonograph or Speaking Machine. Veröffentlicht am 19. Februar 1878.
  • Patent DE12631: Neuerungen an Phonographen. Veröffentlicht am 12. Juli 1878.
  • Patent US227679: Phonograph. Veröffentlicht am 18. Mai 1880.

nps.gov

rutgers.edu

edison.rutgers.edu

spiegel.de

youtube.com