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| US4182261 | 5 mai 1977 | 8 janv. 1980 | Identicator Corporation | Credit card printer for fingerprints and solutions |
| US4382407 | 23 avr. 1981 | 10 mai 1983 | Crown Marking Equipment Co. | Plastic mount for a stamping die |
| US4579057 | 4 mai 1984 | 1 avr. 1986 | | Stamper with rotatable cover |
| US5014617 | 28 juin 1989 | 14 mai 1991 | | Self-storing and inking stamp |
| US5048414 | 27 avr. 1990 | 17 sept. 1991 | Elm Industry Co., Ltd. | Automatic stamper |
| US5115729 | 7 janv. 1991 | 26 mai 1992 | Superior Marking Equipment Co. | Stamper having adjustable die depth |
| US5191837 | 3 janv. 1991 | 9 mars 1993 | Chusid Pty. Ltd. | Hand stamp with folding handle |
| US5392711 | 5 oct. 1993 | 28 févr. 1995 | Kaitec Co., Ltd. | Method of manufacturing a printing plate |
| US5829352 | 7 avr. 1997 | 3 nov. 1998 | Brother Kogyo Kabushiki Kaisha | Stamp device having seal plate and support portion |
| US5865892 | 30 juil. 1997 | 2 févr. 1999 | Tsukineko, Inc. | Expandable stamp pad |
| US6112662 | 12 juil. 1999 | 5 sept. 2000 | Brother Kogyo Kabushiki Kaisha | Stamp unit |
| US6178885 | 2 juil. 1999 | 30 janv. 2001 | Tsukineko, Inc. | Ink vessel-containing stamp pad |
| US6199482 | 31 août 1999 | 13 mars 2001 | Tsukineko, Inc. | Stamp pad with rotary lid and articulated hinge |
| US6311618 | 20 juin 2000 | 6 nov. 2001 | Brother Kogyo Kabushiki Kaisha | Stamp unit with a circumference portion covered by a sealant |
| USD283033 | 20 janv. 1983 | 18 mars 1986 | | Collapsible stamp pad and key fob |
| USD348898 | 21 janv. 1993 | 19 juil. 1994 | Tsukahara Industrial Co., Ltd. | Hand stamp |
| USD376383 | 13 oct. 1995 | 10 déc. 1996 | Dentsu Inc. | Stamper |
| USD447166 | 10 févr. 2000 | 28 août 2001 | Tsukineko, Inc. | Stamp pad with ink vessel |
| USD449062 | 10 févr. 2000 | 9 oct. 2001 | Tsukineko, Inc. | Stamp pad with articulated hinge |
