File:Dynamo - commutating plane definitions.jpg

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    Original file (598 × 625 pixels, file size: 144 KB, MIME type: image/jpeg)

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    Description
    English: Dynamo - commutating plane definitions
    Date
    Source

    Public Domain source:

    Author

    Theo. Audel & Co.

    Photographed, reduced to grayscale, and saved as a PNG by Dale Mahalko, Gilman, WI

    Licensing

    Public domain
    Public domain
    This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1931, and if not then due to lack of notice or renewal. See this page for further explanation.
    United States
    United States
    This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

    Original upload log

    The original description page was here. All following user names refer to en.wikipedia.
    • 2007-09-15 01:41 DMahalko 598×625× (114931 bytes) This is from the 1917 Hawkins Electrical Guide, page 264-265 of volume 1. Photographed, reduced to grayscale, and saved as a PNG by me. Dale Mahalko, Gilman, WI Source and copyright information: {| | [[Image:1917 Hawkins Electrical Guide

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    data size

    147,208 byte

    height

    625 pixel

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    598 pixel

    media type

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    checksum

    978802328dc02d4dba13192684b7b1da221934c9

    determination method or standard: SHA-1

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    Date/TimeThumbnailDimensionsUserComment
    current01:10, 7 February 2012Thumbnail for version as of 01:10, 7 February 2012598 × 625 (144 KB)wikimediacommons>Jbartaminor cleanup

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