The broken lines in the drawings depict portions of the concentrator that form no part of the claimed design. The broken lines showing an associated handle in
The broken lines in the drawings depict portions of the concentrator that form no part of the claimed design. The broken lines showing an associated handle in
Number | Name | Date | Kind |
---|---|---|---|
D187724 | Freedman | Apr 1960 | S |
D191735 | Freedman | Nov 1961 | S |
D244882 | Long | Jun 1977 | S |
D247005 | Cousins | Jan 1978 | S |
D247980 | Wistrand | May 1978 | S |
D248410 | Tomaro | Jul 1978 | S |
D256846 | Haase | Sep 1980 | S |
D273520 | Frey | Apr 1984 | S |
D377694 | Smal | Jan 1997 | S |