| Number | Name | Date | Kind |
|---|---|---|---|
| 2649270 | Franks | Aug 1953 | |
| 3606112 | Cheshier | Sep 1971 | |
| 4040659 | Arnold | Aug 1977 | |
| 4530480 | Pratt | Jul 1985 | |
| 4708386 | Moore et al. | Nov 1987 | |
| 4733908 | Dykstra et al. | Mar 1988 | |
| 4738423 | DiFilippo et al. | Apr 1988 | |
| 4756459 | Hardman | Jul 1988 | |
| 4783037 | Flowerday | Nov 1988 | |
| 4792174 | Shioda | Dec 1988 | |
| 4792184 | Lindberg et al. | Dec 1988 | |
| 4826058 | Nakayama | May 1989 | |
| 4854536 | Lorence et al. | Aug 1989 | |
| 4892281 | DiFilippo et al. | Jan 1990 | |
| 4907775 | Lorence et al. | Mar 1990 | |
| 4943111 | VanderLaan | Jul 1990 | |
| 4981277 | Elwell | Jan 1991 | |
| 5087008 | Miller et al. | Feb 1992 |
| Number | Date | Country |
|---|---|---|
| 443562 | Apr 1927 | DE2 |
| Entry |
|---|
| Product Brochure for "Holdster" published by Imaginit, Inc., Salt Lake City, Utah, first seen Oct. 1990, author unknown. |