VTG Clarks Wallabee Luggers lase gray made in Ireland leather woman shoe size 8

VTG Clarks Wallabee's Luggers lase up gray made in Ireland leather woman's (unisex) shoes size 8, new with no box AI found an info regarding the stamp on a sole : u.s.a. pat 4.808.671 4.250.638" refers to U.S. Patent numbers that were stamped on the outsole of older pairs of Clarks Wallabees. It is not a current model name but an identifying marking. This indicates that a vintage pair of the iconic Clarks Originals Wallabee shoes. The markings are no longer used on modern versions of the shoe, making the presence of the patents a key indicator of an older, potentially collectible pair. About the patent numbers US Patent No. 4,250,638: This patent, granted in 1981, is for a "sole and upper assembly" designed to reduce stress in the wearer's foot and lower leg. It is part of the technology used in the crepe sole of the Wallabee. US Patent No. 4,808,671: This patent, granted in 1989, is for the "crepe sole construction," specifically focusing on how the sole is molded to provide cushioning and flexibility.