Number | Name | Date | Kind |
---|---|---|---|
3663864 | Carlson et al. | May 1972 | |
4013929 | Dietz et al. | Mar 1977 |
Entry |
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Hewlett-Packard, Measurement News, 9-10, 1968, p. 5, Model 180A Oscilloscope. |
Rucker Safety Sentry.TM. Catalog, 1968, p. 2, Model 103 Portable Circuit Interrupter. |