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| Patents for G04B 45 - Time-pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effect (1,513) |
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| 07/12/1977 | US4034555 Lenticular optical system | | 07/12/1977 | US4034554 Clock with moving colored display | | 07/12/1977 | US4034549 Shadow clock | | 04/05/1977 | US4015418 Timepiece with digital time display | | 02/08/1977 | US4006586 Clock housing and decorative means therefor | | 01/18/1977 | US4003197 Watch monitor | | 01/11/1977 | US4002022 Electro-mechanical sign structure with alternating faces formed by several adjacent dihedral angles | | 11/23/1976 | US3992872 Display device | | 09/28/1976 | US3982386 Watches, and a method of making them | | 09/07/1976 | US3978655 Time clock | | 07/27/1976 | US3971928 Display system | | 04/27/1976 | US3952500 Ornamental clock | | 01/27/1976 | US3934405 Rotatable transparent disc second hand for watch |
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