| Number | Name | Date | Kind |
|---|---|---|---|
| D231369 | Kilham | Apr 1974 | |
| D262917 | Kilham | Feb 1982 | |
| D359821 | Liethen | Jun 1995 | |
| 3568641 | Kilham | Mar 1971 | |
| 4188913 | Earl et al. | Feb 1980 | |
| 4829934 | Blasbalg | May 1989 | |
| 4996947 | Petrides | Mar 1991 | |
| 5123380 | Edwards | Jun 1992 | |
| 5215039 | Bescherer | Jun 1993 |
| Entry |
|---|
| Clymer's of Bucks County Catalog; #99 The Supreme Sunflower Seed Feeder. |
| Droll Yankees; 1975; Bird Feeder #A.6. |
| duncraft for the birds catalog; No. 770 Thistle & Sunflower Seeds Tube Feeders; Bird Catalogs Box. |