The broken lines in the drawings depict unclaimed environmental subject matter.
The broken lines in the drawings depict unclaimed environmental subject matter.
| Number | Name | Date | Kind |
|---|---|---|---|
| 248854 | Gladwin | Nov 1881 | A |
| 404197 | Irwin | May 1889 | A |
| 1465870 | Sanders | Aug 1923 | A |
| 1910143 | Arenz | May 1933 | A |
| 2029447 | Swain | Feb 1936 | A |
| 3064699 | Gleason | Nov 1962 | A |
| 5244319 | Cochran | Sep 1993 | A |
| 5820319 | Hull et al. | Oct 1998 | A |
| D504446 | Kobayashi | Apr 2005 | S |
| D585920 | Liao et al. | Feb 2009 | S |
| 20080298916 | Jordan et al. | Dec 2008 | A1 |
| 20090116919 | Dost et al. | May 2009 | A1 |