| Patents for A43B 13 - Soles; Sole and heel units (23,703) | |
|---|---|
| 02/1976 | |
| 02/10/1976 | US3936956 Reflex action sole for shoes having sinuous contoured bottom surface |
| 01/1976 | |
| 01/20/1976 | US3933697 Method for preparing a polyurethane foam comprising quaternary ammonium salt as antistatic agent |
| 01/20/1976 | US3932950 Footwear with non-slip tread |