|
| US4028509 | 29 Ago 1975 | 7 Jun 1977 | Hughes Aircraft Company | Simplified tabulator keyboard assembly for use in watch/calculator having transparent foldable flexible printed circuit board with contacts and actuator indicia |
| US4047010 | 26 Ago 1975 | 6 Sep 1977 | Centre Electronique Horloger S.A. | Multi-functional electronic watch |
| US4055755 | 15 Abr 1976 | 25 Oct 1977 | Sharp Kabushiki Kaisha | Switching assembly in combination wristwatch and calculator |
| US4070649 | 1 Dic 1976 | 24 Ene 1978 | SAID Sanford J. Wright, by said Peter Anderson and said Ralph Grimes | Multi-modal data input/output apparatus and method compatible with bio-engineering requirements |
| US4081664 | 9 Abr 1976 | 28 Mar 1978 | Sharp Kabushiki Kaisha | Calculator operation time period counter in a combination of electronic timepiece and electronic calculator |
| US4086655 | 22 Dic 1976 | 25 Abr 1978 | Sharp Kabushiki Kaisha | Combination timepiece and calculator including slidable keyboard means |
| US4093992 | 8 Nov 1976 | 6 Jun 1978 | Kabushiki Kaisha Suwa Seikosha | Electronic wristwatch |
| US4100401 | 13 Ene 1977 | 11 Jul 1978 | | Calorie calculator-chronometer |
| US4101963 | 25 May 1977 | 18 Jul 1978 | Time Computer, Inc. | Wristwatch calculator with interface chip |
| US4120036 | 3 Sep 1976 | 10 Oct 1978 | Sharp Kabushiki Kaisha | Time information correction in combination timepiece and calculator |
| US4141074 | 29 Ago 1977 | 20 Feb 1979 | | Electronic wrist calculator |
| US4150535 | 29 Oct 1975 | 24 Abr 1979 | Citizen Watch Company Limited | Electronic timepiece |
| US4157588 | 23 Ago 1977 | 5 Jun 1979 | Citizen Watch Co. Ltd. | Miniature type electronic device |
| US4184321 | 20 May 1977 | 22 Ene 1980 | Kabushiki Kaisha Suwa Seikosha | Electronic wristwatch with calculator having improved conductive packing sheet switch element |
| US4201043 | 21 Jul 1977 | 6 May 1980 | Kabushiki Kaisha Suwa Seikosha | Wristwatch calculator imput key positioning assembly |
| US4223211 | 3 Abr 1978 | 16 Sep 1980 | Vitalograph (Ireland) Limited | Pedometer devices |
| US4240150 | 13 Mar 1978 | 16 Dic 1980 | Citizen Watch Co., Ltd. | Portable timepiece calculator with power savings feature |
| US4257003 | 4 Abr 1978 | 17 Mar 1981 | Ma-West, Inc. | Wide range frequency counter |
| US4268913 | 13 May 1977 | 19 May 1981 | Citizen Watch Co., Ltd. | Electronic calculator watch |
| US4272826 | 30 Ago 1979 | 9 Jun 1981 | Peerless Instrument Co., Inc. | Electronic calculator |
| US4361873 | 8 Abr 1981 | 30 Nov 1982 | Texas Instruments Incorporated | Calculator with constant memory |
| US4608655 | 22 Feb 1985 | 26 Ago 1986 | The Regents of the University of California | Wristwatch dosimeter |
| US4882239 | 8 Mar 1988 | 21 Nov 1989 | Minnesota Mining and Manufacturing Company | Light-rechargeable battery |
| US4882685 | 17 Oct 1988 | 21 Nov 1989 | | Voice activated compact electronic calculator |
| US5274217 | 8 Oct 1991 | 28 Dic 1993 | Fritz Hartmann Geratebau GmbH & Co. KG | Keyboard having keys with different heights |
| US5448262 | 29 Nov 1993 | 5 Sep 1995 | ACC Microelectronics Corporation | Display screen blanking using interactive video and user-interface monitoring |
| US7150938 | 27 Mar 2002 | 19 Dic 2006 | Lithium Power Technologies, Inc. | Structurally embedded intelligent power unit |
| US7470244 | 16 May 2003 | 30 Dic 2008 | | Flexion-discouraging splint system, method and device |
| USD244012 | 24 Jul 1975 | 12 Abr 1977 | Uranus Electronics Inc. | Combined watch and calculator |
| USD249243 | 12 Nov 1976 | 5 Sep 1978 | Hewlett-Packard Company | Wristwatch calculator |
| USD259106 | 25 Sep 1978 | 5 May 1981 | | Combined pocket watch and calculator |
| USD353778 | 24 Nov 1992 | 27 Dic 1994 | Casio Computer Co., Ltd. | Wrist watch with electronic calculator |
| USD355611 | 19 Abr 1993 | 21 Feb 1995 | Casio Computer Co., Ltd. | Combined wrist watch, calculator and telephone index |
| USD361279 | 22 Jun 1992 | 15 Ago 1995 | Vuarnet Watches SA | Combined wristwatch and compass |
