|
| US4035834 | 12. Apr. 1976 | 12. Juli 1977 | Matsushita Electric Corporation of America | Beam landing indicator for color cathode ray tube |
| US4254432 | 26. Jan. 1978 | 3. März 1981 | Hitachi, Ltd. | Purity detection apparatus for color picture tubes |
| US4291256 | 11. Juni 1979 | 22. Sept. 1981 | International Business Machines Corporation | Alignment or correction of energy beam type displays |
| US4316211 | 30. Sept. 1980 | 16. Febr. 1982 | RCA Corporation | Color kinescope convergence measuring system |
| US4408163 | 2. Dez. 1980 | 4. Okt. 1983 | International Business Machines Corporation | Method and apparatus for determining beam dimensions at the screen of a shadow mask cathode-ray tube |
| US6058221 | 16. Jan. 1998 | 2. Mai 2000 | Image Processing Systems, Inc. | Electron beam profile measurement method and system |
| US6097355 | 17. Nov. 1997 | 1. Aug. 2000 | Image Processing Systems, Inc. | Purity/beam landing error measurement method for electronic display devices |