File:Wingquist patent PRV 25406 1907b.png

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Summary

Description
English: Sven Wingquist patent drawing, PRV (Patent office Sweden), patent no. 25406 for the multirow self alining ball bearing, 1907.
Date
Source File:Swedish patent 25406 Anordning vid kullager.pdf
Author Sven Wingquist
Permission
(Reusing this file)
Public domain
This Swedish photograph is in the public domain in Sweden because one of the following applies:
  • The photograph does not reach the Swedish threshold of originality (common for snapshots and journalistic photos) and was created before 1 January 1974 (SFS 1960:729, § 49a).
  • The photograph was published anonymously before 1 January 1954 and the author did not reveal their identity during the following 70 years (SFS 1960:729, § 44).

For photos in the first category created before 1969, also {{PD-1996}} usually applies. For photos in the second category published before 1929, also {{PD-US-expired}} usually applies.

If the photographer died before 1954, {{PD-old-70}} should be used instead of this tag. If the author died before 1926, also {{PD-1996}} usually applies.

You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.

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current11:30, 26 August 2020Thumbnail for version as of 11:30, 26 August 20202,337 × 2,909 (148 KB)Materialscientist{{Information |Description={{en|1=Sven Wingquist patent drawing, PRV (Patent office Sweden), patent no. 25406 for the multirow self alining ball bearing, 1907.}} |Source=File:Swedish patent 25406 Anordning vid kullager.pdf |Author=Sven Wingquist |Date=1907 |Permission={{PD-Sweden-photo}} |other_versions= }} Category:Patent drawings
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