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File:CH192864, page 6.png

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Original file (445 × 835 pixels, file size: 45 KB, MIME type: image/png)

Summary

Description
English: Pigeon camera, patent drawing of invention by Christian Adrian Michel.
Date
Source Swiss patent CH192864
Author Unknown who drew it, Christian Adrian Michel (1912-1980) was the patent applicant

Licensing

Public domain
This image is from or of:
  • a law, ordinance, international treaty or other official act
  • a decision, protocol or report by public authorities
  • a means of payment
  • a patent or patent application
of Switzerland or the Swiss cantons. It is therefore not protected by copyright by virtue of Art. 5 of the Swiss Copyright Act.

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image/png

checksum

3c6d12e7eb53c8320ea4bf36dcf58eeeb8313cc9

determination method or standard: SHA-1

data size

46,288 byte

height

835 pixel

width

445 pixel

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Date/TimeThumbnailDimensionsUserComment
current14:54, 22 July 2009Thumbnail for version as of 14:54, 22 July 2009445 × 835 (45 KB)Hans Adler{{Information |Description={{en|1=Pigeon camera, patent drawing of invention by Christian Adrian Michel.}} |Source=Swiss patent CH192864 |Author=Unknown who drew it, Christian Adrian Michel (1912-1980) was the patent applicant |Date=1937-12-01 |Permission

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