Category:Optical communication equipment: Difference between revisions
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[[Image:Optical Communication Systems Photophone Receiver and Headset.jpg|thumb|right|A 1880 drawing of a photophone receiver and headset ]] | |||
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Revision as of 22:12, 12 February 2012
Pages in category "Optical communication equipment"
The following 5 pages are in this category, out of 5 total.
Media in category "Optical communication equipment"
This category contains only the following file.
Optical Communication Systems Photophone Receiver and Headset.jpg 300 × 200; 28 KB
