Number | Name | Date | Kind |
---|---|---|---|
D317705 | Tinz | Jun 1991 | |
2820995 | Schlueter | Jan 1958 | |
2853751 | Schlueter | Sep 1958 | |
2853752 | Schlueter | Sep 1958 | |
4090727 | Busch et al. | May 1978 | |
4746151 | Hoen et al. | May 1988 |
Entry |
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Penn Fabrication Hardware, 6th Edition 1991/1992 (Penn Fabrication Ltd, United Kingdom), pp. 1-3, 5-6 and 7. |
Drawing (Southco, Inc., Pennsylvania), one page. |
"Design News" 23 Jan. 1963 Link-Lock advertisement, Jan. 1963. |