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| US3958150 | 30 Jul 1974 | 18 May 1976 | Nippon Electric Kagoshima, Ltd. | Multi-digit luminescence display tube having means for supplying a positive or zero voltage to a selected grid to suppress luminescence of anode segments covered thereby |
| US4047072 | 29 Mar 1975 | 6 Sep 1977 | Futaba Denshi Kogyo Kabushiki Kaisha | Multi-digit fluorescent display tube |
| US4122376 | 9 Dec 1976 | 24 Oct 1978 | Futaba Denshi Kogyo K.K. | Multi-indicia fluorescent display tube |
| US4132920 | 21 Dec 1976 | 2 Jan 1979 | Nippon Electric Kagoshima | Luminescent display panel having a transparent and conductive film mainly on a window inside surface of a glass cover and a method of manufacturing the same |
| US4223244 | 16 Oct 1978 | 16 Sep 1980 | Futaba Denshi Kogyo K.K. | Fluorescent display device with position selecting and column/row selecting grids |
| US4582984 | 23 May 1983 | 15 Apr 1986 | Thomas & Betts Corporation | Wire marker printer |
