Number | Name | Date | Kind |
---|---|---|---|
2969565 | Levy | Jan 1961 | |
3861101 | Whisson | Jan 1975 | |
4056985 | Worrallo | Nov 1977 | |
4535577 | Tenser et al. | Aug 1985 | |
4682457 | Spencer | Jul 1987 |
Number | Date | Country |
---|---|---|
248701 | Jan 1963 | AUX |
Entry |
---|
Foga System, 1982, 40 pages. |
Gold Bond Building Products (undated), 7 pages. |
Giltspur (undatd), 9 pages. |
Rotolock (undated), 2 pages. |
Syma Systems, Inc. (undated), 1 page. |