Number | Name | Date | Kind |
---|---|---|---|
D153865 | Edelstone et al. | May 1949 | |
D159897 | Edelstone et al. | Aug 1950 | |
D179665 | Sykes | Feb 1957 | |
D244702 | Montambo | Jun 1977 | |
D279035 | Braswell | May 1985 | |
D290298 | Sinclair | Jun 1987 | |
D309198 | Macramalla | Jul 1990 | |
D318146 | Fitzgerald | Jul 1991 | |
1649718 | McMullen | Nov 1927 |
Entry |
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BRK Electronics product catalog CM759, p. 14, 1994. |
BRK Brands product catalog CM760, pp. 6-7, 1995. |
Pittway Corporation product catalog CM501, 3 pages, 1990. |