1892 Incandescent Electric Lamps, Patent No. 543,280 by George Westinghouse http://www.google.com/patents/US543280
- light_bulbs_aka_incandescent_lamp.txt
- Last modified: 2019/07/28 16:39
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light_bulbs_aka_incandescent_lamp
1892 Incandescent Electric Lamps, Patent No. 543,280 by George Westinghouse http://www.google.com/patents/US543280