|
| US3976049 | 28 Jun 1974 | 24 Ago 1976 | Asahi Kasei Kogyo Kabushiki Kaisha | Structure of warmer |
| US3980070 | 8 Ene 1975 | 14 Sep 1976 | Scotty Manufacturing Company | Heating pack containing a granular chemical composition |
| US4901472 | 16 Sep 1988 | 20 Feb 1990 | | Method and apparatus for the protection of citrus trees from frost damage |
| US5702375 | 22 Jun 1995 | 30 Dic 1997 | Stephen P. Angelillo | Absorbent pad and thermal pack |
| US6265631 | 7 Oct 1997 | 24 Jul 2001 | Sherwood Services AG | Absorbent pad and thermal pack |
| USRE32026 | 13 Abr 1984 | 12 Nov 1985 | Asahi Kasei Kogyo Kabushiki Kaisha | Structure of warmer |