Number | Name | Date | Kind |
---|---|---|---|
D111000 | Knox et al. | Aug 1938 | |
D141834 | Maxson, Jr. | Jul 1945 | |
D267424 | Boldt et al. | Dec 1982 | |
D281811 | Horst, Sr. | Dec 1985 | |
D290391 | Nakamura | Jun 1987 | |
D325251 | Schindler et al. | Apr 1992 | |
D329692 | Chaney et al. | Sep 1992 | |
2131484 | Ringwald | Jul 1935 | |
2329592 | Clemons | Sep 1943 | |
2707745 | Farr et al. | May 1955 | |
2852657 | Markel et al. | Sep 1958 | |
3051820 | Krichton | Aug 1962 | |
3059090 | Waters | Dec 1960 | |
3175550 | Knapp | Feb 1963 | |
3610882 | Omohundra | Oct 1971 | |
3806314 | Obuchi et al. | Apr 1974 | |
3811208 | Vieceli et al. | May 1974 | |
4309593 | Jones et al. | Jan 1982 |
Entry |
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Advertisement published by Patton Electric Company, Inc., New Haven, Ind., Patton Wide Angle, published at least as early as Sep. '91, on sale several months prior to Sep. '91. |
Catalog page titled Quartz Heater and Electric Heaters, published by W. B. Marvin Manufacturing Co., Urban, Ohio Jul. '92. |
Copy of brochure Portable Electric Heaters, published by W. B. Marvin Manufacturing Co., Urban, Ohio, Feb. '88. |