Planar (Objektiv) (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Planar (Objektiv)" in German language version.

refsWebsite
Global rank German rank
1st place
1st place
3,893rd place
309th place
800th place
160th place
8,055th place
low place
low place
low place

dpma.de

register.dpma.de

espacenet.com

worldwide.espacenet.com

  • Patent DE92313C: Astigmatisch, sphärisch und chromatisch corrigiertes Objektiv. Angemeldet am 14. November 1896, veröffentlicht am 5. Juli 1897, Anmelder: Firma Carl Zeiss.

lippisches-kameramuseum.de

visual-memory.co.uk

web.archive.org