Number | Name | Date | Kind |
---|---|---|---|
2994154 | McCaa | Aug 1961 |
Entry |
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Science Electronics, Inc., "Erectronic", Feb. 1957. |
Welch Scientific Co., "Bell Outfit", Oct. 1965, p. 242. |
Fisher Scientific Co., "Self Inductance and Series Parallel Circuit Apparatus", Feb. 1969, p. 287. |