Patent Grant
D361399
| Number | Name | Date | Kind |
|---|---|---|---|
| D147258 | Becker | Aug 1947 | |
| D152584 | Becker | Feb 1949 | |
| D166073 | Dunkelberger | Mar 1952 | |
| D190295 | Becker et al. | May 1961 | |
| D192935 | Becker et al. | May 1962 | |
| D240322 | Staub | Jun 1976 | |
| D281820 | Oba et al. | Dec 1985 | |
| D283645 | Tanaka et al. | Apr 1986 | |
| D291010 | Fenne | Jul 1987 | |
| D292131 | Fenne | Sep 1987 | |
| D296478 | Powell et al. | Jun 1988 | |
| D302325 | Charet et al. | Jul 1989 | |
| D304089 | Wan | Oct 1989 | |
| D306351 | Charet et al. | Feb 1990 | |
| D314246 | Bache | Jan 1991 | |
| D321062 | Bonbright | Oct 1991 | |
| D322681 | Yuen | Dec 1991 | |
| D328146 | Sinsteden | Jul 1992 | |
| D329504 | Yuen | Sep 1992 | |
| D334822 | Antognazza | Apr 1993 | |
| D337839 | Zeller | Jul 1993 | |
| D338542 | Yuen | Aug 1993 | |
| D341220 | Eagan | Nov 1993 | |
| D345811 | Van Deursen | Apr 1994 | |
| 1692394 | Sundh | Nov 1928 | |
| 2467954 | Becker | Apr 1949 | |
| 2581129 | Muldoon | Jan 1952 | |
| 2648762 | Dunkelberger | Aug 1953 | |
| 3103723 | Becker | Sep 1963 | |
| 3111277 | Grimsley | Nov 1963 | |
| 3393311 | Dahl | Jul 1968 | |
| 3393312 | Dahl | Jul 1968 | |
| 3731084 | Trevorrow | May 1973 | |
| 4495550 | Visciano | Jan 1985 | |
| 4803605 | Schallet et al. | Feb 1989 | |
| 4839599 | Fischer | Jun 1989 | |
| 4903178 | Englot et al. | Feb 1990 | |
| 5103384 | Drohan | Apr 1992 | |
| 5154483 | Glassford | Mar 1992 | |
| 5163752 | Drohan | Apr 1992 | |
| 5268826 | Greene | Oct 1992 | |
| 5276596 | Krenzel | Jan 1994 |
| Number | Date | Country |
|---|---|---|
| 004397 | Nov 1984 | DEX |
| 8907549 | Oct 1989 | DEX |
| 9100685 | Jan 1991 | DEX |
| 9307238 | Sep 1993 | DEX |
| 604541 | Jul 1983 | JPX |
| 609211 | Sep 1983 | JPX |
| 644196 | Jan 1985 | JPX |
| 650703 | May 1985 | JPX |
| 669446 | Dec 1985 | JPX |
| 670458 | Jan 1986 | JPX |
| 671712 | Feb 1986 | JPX |
| 671733 | Feb 1986 | JPX |
| 671734 | Feb 1986 | JPX |
| 685931 | Aug 1986 | JPX |
| 685936 | Aug 1986 | JPX |
| 685937 | Aug 1986 | JPX |
| 694405 | Dec 1986 | JPX |
| 852350 | Nov 1992 | JPX |
| Entry |
|---|
| PS For Kids--Editors of Popular Science Magazine pp. 28 and 29 Fall-1992. |
