|
| US3995250 | 5. Nov. 1975 | 30. Nov. 1976 | | Portable traffic signal light |
| US4032883 | 5. Dez. 1975 | 28. Juni 1977 | | Portable traffic signal |
| US4108405 | 22. Juni 1977 | 22. Aug. 1978 | | Light assembly and flasher circuit |
| US4616225 | 31. März 1983 | 7. Okt. 1986 | Material Sales, Inc. | Portable traffic control signal device |
| US4706087 | 24. Jan. 1985 | 10. Nov. 1987 | | Portable traffic signal |
| US4857921 | 30. Mai 1986 | 15. Aug. 1989 | Flagman, Inc. | Digital traffic control system |
| US4992788 | 2. Okt. 1989 | 12. Febr. 1991 | International Traffic Systems, Inc. | Traffic control trailer system |
| US5422638 | 24. Febr. 1994 | 6. Juni 1995 | Quintech, Inc. | Stand for a remotely operated road sign |
| US5900826 | 27. Nov. 1996 | 4. Mai 1999 | | Remote controlled portable traffic signals |
| US5986576 | 21. Jan. 1998 | 16. Nov. 1999 | | Remote control portable traffic control device and system |
| US6018926 | 18. Mai 1998 | 1. Febr. 2000 | | Banner pole structure |
| US7586421 | 15. Nov. 2006 | 8. Sept. 2009 | Emergency Traffic Systems, Inc. | Traffic signal devices and methods of using the same |
| US8164483 | 18. Juli 2011 | 24. Apr. 2012 | | Portable electro-mechanical signal system |
| USD267158 | 7. Aug. 1978 | 7. Dez. 1982 | | Semaphore |
| USD518401 | 19. Nov. 2004 | 4. Apr. 2006 | | Electronic signal traffic direction determinant |
