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| All Patents in class 427/112 | |||||
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| Number | Date | Patentee | Title | Type | |
| 323,372 | Jul. 28, 1885 | W. Stanley, Jr., E.P. Thopmson | Carbon for incandescent lamps | electric arc lamps | |
| 878,463 | Feb. 04, 1908 | F. Hanaman, A. Just | Process of Manufacturing Incandescent Bodies for Electric Lamps | incandescent light bulbs | |