| 2025-01-26 | Circuit board device |
| 2023-11-22 | Semiconductor device |
| 2023-10-20 | A.C. converter |
| 2022-11-12 | LED component? |
| 2020-01-22 | Part of a crystal radio kit |
| 2018-04-23 | Semiconductor device with two terminals |
| 2018-03-02 | Cellphone component |
| 2017-09-22 | Current director |
| 2017-02-19 | Certain vacuum tube |
| 2015-11-21 | Current path? |
| 2014-12-08 | Certain vacuum tube |
| 2014-07-18 | Electronics component |
| 2014-02-19 | Part of LED |
| 2012-04-23 | Electron tube |
| 2010-06-01 | L.E.D. part |
| 2010-02-07 | Part of L.E.D. |
| 2009-06-23 | Electron tube with two elements |
| 2008-11-20 | Device also called a rectifier |
| 2005-06-15 | Electron tube |
| 2005-02-27 | Part of L.E.D. |
| 2004-04-11 | Crystal set part |
| 2004-03-29 | Electron tube |
| 2002-03-19 | Part of LED |
| 2000-06-22 | Electronic gate |
| 1999-07-20 | Semiconductor, e.g. |
| 1998-06-19 | Part of LED |
| 1998-03-07 | Fleming valve |
| 1998-02-11 | Electron tube |
| 1996-06-09 | Electron tube type |
| 1996-04-21 | Semiconductor device |
| 1995-06-01 | Electron tube |
| 1995-04-19 | Electron tube |
| 1994-11-28 | Radio part |
| 1994-02-04 | Digital clock's light emitter |
| 1994-01-26 | Electron tube |