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searching for Richard H. Frenkiel 2 found (19 total)

Cellular network (4,879 words) [view diff] exact match in snippet view article find links to article

411 – Cellular Radiotelephone System for Different Cell Sizes – Richard H. Frenkiel (Bell Labs), filed 22 September 1976, issued 13 March 1979 Paetsch

History of the telephone (6,333 words) [view diff] exact match in snippet view article find links to article

allocated. Cellular technology was undeveloped until the 1960s, when Richard H. Frenkiel and Joel S. Engel of Bell Labs developed the electronics. Meanwhile