The broken lines in the drawings depict unclaimed environmental subject matter.
The broken lines in the drawings depict unclaimed environmental subject matter.
Number | Date | Country | Kind |
---|---|---|---|
122683 | Oct 2007 | CA | national |
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4416169 | Silvey | Nov 1983 | A |
4836058 | Shepherd | Jun 1989 | A |
5117713 | Markusson | Jun 1992 | A |
5525095 | Baughman | Jun 1996 | A |
D458617 | Wang | Jun 2002 | S |
7175512 | Huntington et al. | Feb 2007 | B2 |
D559872 | Pfaff | Jan 2008 | S |
20020045404 | Cantoro | Apr 2002 | A1 |
20050183545 | Huntington et al. | Aug 2005 | A1 |