| Number | Name | Date | Kind |
|---|---|---|---|
| D275948 | Vakil | Oct 1984 | |
| D289798 | Joosten | May 1987 | |
| D291358 | Witte | Aug 1987 | |
| D302471 | Cassidy et al. | Jul 1989 | |
| D302733 | Sangen et al. | Aug 1989 | |
| D304030 | Vakil | Oct 1989 | |
| D304087 | Porembski et al. | Oct 1989 | |
| D304502 | Heidemann et al. | Nov 1989 | |
| D334244 | Shaffer et al. | Mar 1993 | |
| 2009220 | Bol | Jul 1935 | |
| 2505993 | Rogers | May 1950 | |
| 3815080 | Summa | Jun 1974 | |
| 4375607 | Morton et al. | Mar 1983 | |
| 4414489 | Young | Nov 1983 | |
| 4545774 | Van Gils et al. | Oct 1985 | |
| 4777405 | Hermes et al. | Oct 1988 | |
| 4792726 | Gandhi | Dec 1988 | |
| 4934768 | Blaisdell | Jun 1990 | |
| 5086249 | Blaisdell et al. | Feb 1992 |
| Entry |
|---|
| The Specification Sheet for PL Adapter by North American Philips Lighting Corporation, published in the USA in 1983. |
| Product literature entitled, "The Ultimate in Energy Miser Adapters-EC 300 Series", two pages, published by Progressive Technology in Lighting in the USA, publication date unknown. |