File:Railway car retarder.png

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Description
English: Operable skate type of railway car retarder, Fig. 2
Date
Source U.S. Patent No. 3,827,533
Author Peter M. Noble
Permission
(Reusing this file)
United States Patent


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Date/TimeThumbnailDimensionsUserComment
current10:15, 18 May 2007Thumbnail for version as of 10:15, 18 May 20072,800 × 1,800 (574 KB)Densha Gokko (talk | contribs){{Information |Description={{en|Operable skate type of railway car retarder, Fig. 2}} |Source=[http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=3827533 U.S. Patent No. 3,827,533] |Date=1974-08-06 |Author=Peter M. Noble |Permission=United States Pate

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