Number | Name | Date | Kind |
---|---|---|---|
4220316 | Naka et al. | Sep 1980 | A |
4895332 | Hansen et al. | Jan 1990 | A |
5127131 | Corrigan et al. | Jul 1992 | A |
5190267 | Schmitt et al. | Mar 1993 | A |
D344592 | Zaccai et al. | Feb 1994 | S |
5779228 | Hansen | Jul 1998 | A |
6076233 | Sasaki et al. | Jun 2000 | A |
Entry |
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Hansen Commercial & Industrial Hardware Catalogue, at least as early as 1997, pp. 73, 74, 75, 79, 80, and 134. |