|
| US4093937 | 24. Mai 1976 | 6. Juni 1978 | | Automatic runway traffic direction control |
| US4203091 | 22. Febr. 1978 | 13. Mai 1980 | Mats Holersson Fridmark | Sequentially actuated flashing light apparatus |
| US4216413 | 2. Apr. 1979 | 5. Aug. 1980 | Societe Anonyme des Etablissements Adrien De Backer | System for sequentially operating flash lamps in repeated sequences |
| US4277674 | 25. Aug. 1978 | 7. Juli 1981 | Olympus Optical Co., Ltd. | Tape running direction indicator |
| US4329677 | 5. Juli 1979 | 11. Mai 1982 | Te Ka de Felten & Guilleaume Fernmeldeanlagen GmbH | Signal-light systems, especially for a series of emergency-phone stations distributed along the length of a highway, or the like |
| US4508997 | 15. Apr. 1983 | 2. Apr. 1985 | Delmatic Limited | Lighting control system |
| US5136288 | 26. Sept. 1990 | 4. Aug. 1992 | Britec | Method and installation for providing alignment guidance to an aircraft in the approach stage |
| US5400009 | 7. Okt. 1993 | 21. März 1995 | Wheelock Inc. | Synchronization circuit for visual/audio alarms |
| US5608375 | 20. März 1995 | 4. März 1997 | Wheelock Inc. | Synchronized visual/audible alarm system |
| US5751210 | 27. Febr. 1997 | 12. Mai 1998 | Wheelock Inc. | Synchronized video/audio alarm system |
| US5982112 | 22. März 1994 | 9. Nov. 1999 | David A. Pringle | Low pressure xenon lamp and driver circuitry for use in theatrical productions and the like |
| US5982275 | 7. Mai 1998 | 9. Nov. 1999 | Wheelock, Inc. | Synchronized video/audio alarm system |
| US6140778 | 6. Juni 1995 | 31. Okt. 2000 | David A. Pringle | Low pressure xenon lamp and driver circuitry for use in theatrical productions and the like |
| US6369696 | 26. Febr. 2001 | 9. Apr. 2002 | Wheelock, Inc. | Apparatus and method for synchronizing visual/audible alarm units in an alarm system |
| US6583718 | 9. Apr. 2002 | 24. Juni 2003 | Wheelock, Inc. | Apparatus and method for synchronizing visual/audible alarm units in an alarm system |
| US6900742 | 24. Jan. 2003 | 31. Mai 2005 | Little Circuits, Inc. | Light control module for aviation obstruction marking |
| US7157860 | 7. Okt. 2002 | 2. Jan. 2007 | Siemens Aktiengesellschaft | Control device for flashlight systems in airports |
| US7403096 | 2. Juni 2006 | 22. Juli 2008 | Wheelock, Inc. | Apparatus and method for synchronizing visual/audible alarm units in an alarm system |
| US7907047 | 15. Juli 2008 | 15. März 2011 | Wheelock, Inc. | Apparatus and method for synchronizing visual/audible alarm units in an alarm system |
| USRE38183 | 14. März 1997 | 15. Juli 2003 | Wheelock Inc. | Synchronization circuit for visual/audio alarms |
