The broken lines in the drawings depict unclaimed environmental subject matter.
The broken lines in the drawings depict unclaimed environmental subject matter.
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3837757 | Levine | Sep 1974 | A |
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D414669 | Howard | Oct 1999 | S |
6692201 | Soderman | Feb 2004 | B2 |
D497622 | Theising et al. | Oct 2004 | S |
20030233925 | Makrupoulos | Dec 2003 | A1 |
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20070217879 | Larsson | Sep 2007 | A1 |
Number | Date | Country |
---|---|---|
3629368 | Mar 1988 | DE |
9204693 | Jun 1992 | DE |
9406622 | Feb 1995 | DE |
Number | Date | Country | |
---|---|---|---|
Parent | 29299852 | Apr 2008 | US |
Child | 29361356 | US |