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| US3973255 | 24 Dec 1974 | 3 Aug 1976 | | Touch responsive keyboard apparatus |
| US4032729 | 21 Dec 1973 | 28 Jun 1977 | Rockwell International Corporation | Low profile keyboard switch having panel hinged actuators and cantilevered beam snap acting contacts |
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| US4128744 | 22 Feb 1977 | 5 Dec 1978 | Chomerics, Inc. | Keyboard with concave and convex domes |
| US4136270 | 24 Mar 1977 | 23 Jan 1979 | GTE Automatic Electric Laboratories Incorporated | Actuator for pushbutton switch |
| US4249054 | 28 Feb 1979 | 3 Feb 1981 | Sharp Kabushiki Kaisha | Metallic housing for an electronic apparatus with a flat keyboard |
| US4278861 | 1 Aug 1979 | 14 Jul 1981 | Casio Computer Co., Ltd. | Key button structure for electronic devices |
| US4293754 | 28 Dec 1979 | 6 Oct 1981 | Sharp Kabushiki Kaisha | Thin and flat keyboard integral with a metallic housing |
| US4338502 | 6 Oct 1980 | 6 Jul 1982 | Sharp Kabushiki Kaisha | Metallic housing for an electronic apparatus with a flat keyboard |
| US4425484 | 23 Jul 1981 | 10 Jan 1984 | AMP Incorporated | Encoded keyboard switch |
| US4493524 | 26 Jun 1981 | 15 Jan 1985 | Honeywell Information Systems Inc. | Factory data collection terminal conduit enclosure |
| US4503294 | 28 Nov 1983 | 5 Mar 1985 | Nippon Mektron Ltd. | Keyboard switch |
| US4613736 | 6 Dec 1984 | 23 Sep 1986 | Sony Corporation | Operating panel |
| US4725817 | 26 Jul 1985 | 16 Feb 1988 | Tecator AB | Pressure responsive panel |
| US4771139 | 27 Jun 1986 | 13 Sep 1988 | | Keyboard with metal cover and improved switches |
| US4968862 | 18 Apr 1989 | 6 Nov 1990 | Alps Electric Co., Ltd. | Multiple circuit switch device with drain passage |
| US4997998 | 26 Oct 1988 | 5 Mar 1991 | Preh, Elektrofeinmechanische Werke Jakob Preh, Nachf. GmbH & Co. | Key cap for a keyboard |
| US5729222 | 25 Nov 1996 | 17 Mar 1998 | Jerry Iggulden | User-configurable control device |
| US7005588 | 10 Jun 2004 | 28 Feb 2006 | Nokia Corporation | Keyboard and a method for manufacturing it |
| US7404682 | 27 Sep 2005 | 29 Jul 2008 | Motorola Inc. | Thin keypad assemblies and components for electronics devices and methods |
| US7946775 | 30 Oct 2007 | 24 May 2011 | Motorola Mobility, Inc. | Thin keypad assemblies and components for electronics devices and methods |
| USRE32419 | 27 Jan 1986 | 12 May 1987 | Engineering Research Applications, Inc. | Molded keyboard and method of fabricating same |
