| Number | Name | Date | Kind |
|---|---|---|---|
| D182029 | Kirk | Feb 1958 | |
| D205168 | Schreckengost | Jun 1966 | |
| D254566 | Cummins | Mar 1980 | |
| D271133 | Pataki | Oct 1983 | |
| D286673 | Kahn | Nov 1986 | |
| D325432 | Cook | Apr 1992 | |
| 2985092 | Gamache | Sep 1957 | |
| 4120615 | Keem et al. | Oct 1978 |
| Number | Date | Country |
|---|---|---|
| 2189119 | Oct 1987 | GBX |
| Entry |
|---|
| Hong Kong Enterprise Feb. 1993, p. 190, Box Fan A, bottom right side of page, also p. 120, Fan Heater B, top right side of page. |
| Advertisement Marvin 3000, Published by W. B. Marvin Manufacturing Company, Oct. 1992. |
| Advertisement Marvin-486, Published by W. B. Marvin Manufacturing Company, Oct. 1993. |
| Photocopies of Duracraft 10" Box Fan Owner's Manual, published Oct., 1991 by Duracraft Corp. and Photocopies of box front and sides which contained the Owner's Manual. |