04017725 is referenced by 45 patents and cites 7 patents.

A portable calculator utilizing a solar panel array which can be either slidably moved within the calculator's housing or pivotly connected to it and which when exposed to incident light provide power for the calculator.

Title
Solar powered portable calculator
Application Number
5/538308
Publication Number
4017725
Application Date
January 3, 1975
Publication Date
April 12, 1977
Inventor
Stephen A Roen
New York
NY, US
Agent
Robert F Rotella
Norman Friedman
Stephen A Roen
Assignee
Litton Business Systems
NJ, US
IPC
H01V 1/30
G06F 15/30
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