| Number | Name | Date | Kind |
|---|---|---|---|
| 3154870 | Hopp et al. | Nov 1964 | |
| 3428108 | Singer | Feb 1969 | |
| 3430997 | Propst et al. | Mar 1969 | |
| 3466777 | Wistrand et al. | Sep 1969 | |
| 3811785 | Hagglund | May 1974 | |
| 3901612 | Canin | Aug 1975 | |
| 4021973 | Hegg et al. | May 1977 | |
| 4103465 | McDonald, Jr. | Aug 1978 | |
| 4448231 | Salkeld et al. | May 1984 | |
| 4545142 | Whisnant | Oct 1985 | |
| 4601145 | Wilcox | Jul 1986 | |
| 5105594 | Kirchner | Apr 1992 |
| Entry |
|---|
| "Daymond Modular Systems" (7-page brochure). |