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| US4583619 | 19 août 1983 | 22 avr. 1986 | | Automatic gate for checkout lane |
| US6094863 | 19 févr. 1999 | 1 août 2000 | | Attachment to retrofit existing safety gates to imrove the safety afforded by the gates |
| US6684566 | 20 févr. 2002 | 3 févr. 2004 | | Safety gate and guard for such a gate |
| USD485911 | 10 mai 2002 | 27 janv. 2004 | Can-Am Industrial Safety Gates Ltd. | Safety gate |
