|
| US4045636 | 28 janv. 1976 | 30 août 1977 | Bowmar Instrument Corporation | Keyboard switch assembly having printed circuit board with plural layer exposed contacts and undersurface jumper connections |
| US4065649 | 14 juin 1976 | 27 déc. 1977 | Lake Center Industries | Pressure sensitive matrix switch having apertured spacer with flexible double sided adhesive intermediate and channels optionally interposed between apertures |
| US4066851 | 1 juil. 1976 | 3 janv. 1978 | Chomerics, Inc. | Keyboard switch assembly having foldable printed circuit board, integral spacer and preformed depression-type alignment fold |
| US4090045 | 1 avr. 1977 | 16 mai 1978 | Marsh Products, Inc. | Keyboard strip switch assembly having multifurcated conductive screen contact with contact cleaning wiping-action |
| US4090092 | 16 juil. 1976 | 16 mai 1978 | General Electric Company | Shielding arrangement for a capacitive touch switch device |
| US4127752 | 13 oct. 1977 | 28 nov. 1978 | Sheldahl, Inc. | Tactile touch switch panel |
| US4128744 | 22 févr. 1977 | 5 déc. 1978 | Chomerics, Inc. | Keyboard with concave and convex domes |
| US4145584 | 25 avr. 1977 | 20 mars 1979 | | Flexible keyboard switch with integral spacer protrusions |
| US4204098 | 25 févr. 1977 | 20 mai 1980 | Tektronix, Inc. | Multiple circuit switch assembly |
| US4228330 | 10 juil. 1978 | 14 oct. 1980 | Litton Systems, Inc. | Touch panel mechanism |
| US4237358 | 7 mai 1979 | 2 déc. 1980 | Oak Industries Inc. | Isolation membrane switch |
| US4247747 | 7 mars 1979 | 27 janv. 1981 | Decca Limited | Illuminated panels |
| US4258096 | 9 nov. 1978 | 24 mars 1981 | Sheldahl, Inc. | Composite top membrane for flat panel switch arrays |
| US4303811 | 3 déc. 1979 | 1 déc. 1981 | W. H. Brady Co. | Kit for use in the construction of custom prototype membrane switch panels |
| US4304973 | 19 févr. 1980 | 8 déc. 1981 | Otis Elevator Company | Rugged low force switch apparatus |
| US4317011 | 21 janv. 1980 | 23 févr. 1982 | Chicago Decal Company | Membrane touch switch |
| US4375018 | 16 juin 1980 | 22 févr. 1983 | Sheldahl, Inc. | Membrane switch having adhesive label as edge seal |
| US4376239 | 30 avr. 1982 | 8 mars 1983 | Allen-Bradley Company | Industrial membrane switch |
| US4385215 | 9 nov. 1981 | 24 mai 1983 | EECO Incorporated | Thin-membrane switch |
| US4417294 | 28 août 1981 | 22 nov. 1983 | Illinois Tool Works Inc. | Capacitive keyswitch |
| US4440999 | 13 août 1982 | 3 avr. 1984 | Press On, Inc. | Membrane switch |
| US4471177 | 13 août 1982 | 11 sept. 1984 | Press On, Inc. | Enlarged switch area membrane switch and method |
| US4640994 | 7 févr. 1986 | 3 févr. 1987 | Sharp Kabushiki Kaisha | Electronic apparatus with a flat panel keyboard unit |
| US5061830 | 16 avr. 1990 | 29 oct. 1991 | | Extension electrical switch system and method of manufacture |
