Number | Name | Date | Kind |
---|---|---|---|
D. 64772 | Swanberg | May 1924 | |
D. 89339 | Hale | Feb 1933 | |
D. 100845 | Bloser | Aug 1936 | |
D. 265212 | Spiegel | Jun 1982 | |
D. 314978 | Oka | Feb 1991 | |
D. 319662 | Henry | Sep 1991 | |
D. 337611 | Peersmann | Jul 1993 | |
D. 338915 | Willat | Aug 1993 | |
D. 388825 | Kouda | Jan 1998 | |
D. 395919 | Rosenbaum | Jul 1998 | |
D. 397150 | Izushima | Aug 1998 | |
D. 400581 | Hasegawa | Nov 1998 | |
D. 402693 | Sunaga | Dec 1998 | |
D. 404070 | Hasegawa | Jan 1999 | |
D. 413145 | Brescia et al. | Aug 1999 | |
D. 418873 | Shen | Jan 2000 | |
D. 424110 | Hu | May 2000 | |
2236194 | Lorber | Mar 1941 | |
2845047 | McKendree | Jul 1958 | |
4601598 | Schwartz et al. | Jul 1986 | |
4932800 | Lin et al. | Jun 1990 | |
5000599 | McCall et al. | Mar 1991 |
Entry |
---|
SENSA brand pen, at least as early as 1998. |