The broken lines in the drawings represent unclaimed environmental subject matter.
The broken lines in the drawings represent unclaimed environmental subject matter.
Number | Name | Date | Kind |
---|---|---|---|
588146 | Havecotte | Aug 1897 | A |
591315 | Wilson | Oct 1897 | A |
658295 | Sullivan | Sep 1900 | A |
1049653 | Blackburn | Jan 1913 | A |
1425341 | Sanders | Aug 1922 | A |
1751807 | Ford | Mar 1930 | A |
2239562 | Kennedy | Apr 1941 | A |
D244251 | McCallum | May 1977 | S |
4360053 | Buckner | Nov 1982 | A |
D415832 | Schubert | Oct 1999 | S |
D543765 | Allen | Jun 2007 | S |
7717704 | Burtea et al. | May 2010 | B2 |
20060260604 | Hata | Nov 2006 | A1 |
Number | Date | Country |
---|---|---|
59097456 | Jun 1984 | JP |