File:Siffert Christian-US2113862A-1938-Roller Skate-Patent Drawing-FIGs 1 n 3-padded.png

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English: Patent drawing figures 1 and 3 from U.S. Patent 2,113,862 "TITLE" by Christian Siffert granted on 1938-04-12
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Source U.S. Patent 2,113,862
Author Christian Siffert
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 In general, the contents of United States patents are in the public domain.

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A portion of the disclosure of this patent document contains material which is subject to (copyright or mask work) protection. The (copyright or mask work) owner has no objection to the facsimile reproduction by any­one of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all (copyright or mask work) rights whatsoever.

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current15:31, 21 December 2024Thumbnail for version as of 15:31, 21 December 20242,495 × 1,425 (36 KB)Fred Hsu (talk | contribs)Reverted to version as of 05:51, 21 December 2024 (UTC)
05:58, 21 December 2024Thumbnail for version as of 05:58, 21 December 20241,940 × 1,425 (32 KB)Fred Hsu (talk | contribs)change padding amount
05:51, 21 December 2024Thumbnail for version as of 05:51, 21 December 20242,495 × 1,425 (36 KB)Fred Hsu (talk | contribs){{Information |Description={{en|1=Patent drawing figures 1 and 3 from {{US patent|2,113,862}} "TITLE" by Siffert Christian granted on 1938-04-12}} |Date=1938-04-12 |Source={{US patent|2,113,862}} |Author=Siffert Christian |Permission= |other versions= }} =={{int:license-header}}== {{PD-US-patent}} Category:Inline skates Category:United States patent drawings Category:Files by User:Fredhsu from en.wikipedia

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