| Number | Name | Date | Kind |
|---|---|---|---|
| 612625 | Decker | Oct 1898 | A |
| 808834 | Eice | Jan 1906 | A |
| 843826 | Kloeppinger | Feb 1907 | A |
| 1292935 | Walsh | Jan 1919 | A |
| 1496957 | Walker | Jun 1924 | A |
| 1527326 | Owens | Feb 1925 | A |
| 1608283 | Woolsey | Nov 1926 | A |
| 1618622 | Woolsey | Feb 1927 | A |
| 2152456 | Barrie | Mar 1939 | A |
| 2367448 | Thiele | Jan 1945 | A |
| 2586005 | Colonna | Feb 1952 | A |
| 2741392 | Weiss | Apr 1956 | A |
| 2936898 | Miquez | May 1960 | A |
| 3050073 | McMillan | Aug 1962 | A |
| 3182854 | Geller | May 1965 | A |
| 3289854 | Kauffman | Dec 1966 | A |
| 3935958 | Frangos | Feb 1976 | A |
| 3960290 | Yake et al. | Jun 1976 | A |
| 4058233 | Frangos | Nov 1977 | A |
| 4157145 | Jordan | Jun 1979 | A |
| 4192432 | Jordan | Mar 1980 | A |
| 4193588 | Doneaux | Mar 1980 | A |
| 4339051 | Crawford | Jul 1982 | A |
| 4498594 | Elder | Feb 1985 | A |
| 4512489 | Green et al. | Apr 1985 | A |
| 4718441 | Daum et al. | Jan 1988 | A |
| 4732291 | McConnell | Mar 1988 | A |
| 4748993 | Llewellyn | Jun 1988 | A |
| 4830200 | Zambano et al. | May 1989 | A |
| 4836392 | Constantino | Jun 1989 | A |
| 5209784 | Bellman | May 1993 | A |
| 5211191 | Brown | May 1993 | A |
| D338749 | McConnell | Aug 1993 | S |
| Number | Date | Country |
|---|---|---|
| 1 642 159 | Aug 1971 | DE |
| 29 29 227 | Oct 1980 | DE |
| A 46 735 U | Aug 1985 | DE |
| 40 22 269 | Jan 1992 | DE |
| Entry |
|---|
| European Patent Office 143,754 Jun./1985 (Pletro).* |
| European Patent Office 186,157 Dec./1985 (Huttemann). |