File:Johnson_Controls_Temperature_Control_System.jpg
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Summary
DescriptionJohnson Controls Temperature Control System.jpg |
English: 1895 Patent Drawing of multi-zone temperature control system by Warren Johnson; designated a landmark by ASME |
Date | |
Source | US Patent Drawing by Warren Johnson 1895 |
Author | Warren Johnson |
Licensing
Public domainPublic domainfalsefalse |
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
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Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Johnson_Controls_Temperature_Control_System.jpg |
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Items portrayed in this file
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1895
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:40, 20 October 2019 | 4,595 × 6,921 (10 MB) | TomahF | User created page with UploadWizard |
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