Image Colnect-3169-012-Transistors-and-Printed-Circuit-Board.jpg
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Type: stamp Issuer: United States Date: 1973 Denom: ?
Visibility: public Image owner: none postage 7/10/1973 8c multi issue=Progress in Electronics dt=electronics progress d=printed circuit board unwmk perf=11 Crops No visible images cropped from this one. Measurements Resolution is unknown. Source Source name: Colnect File URL: http://i.colnect.net/b/3169/012/Transistors-and-Printed-Circuit-Board.jpg Uploaded May 19, 2016, 3:42 pm by Stan Shebs |
