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Patent:US3159341


Patent:US 3159341
Title:Extended Square Root Mech for a Square Root Calc Mach
Date:01.12.1964
Place:
Country:USA
Person:Ellerbeck, Grant Clawson (P)
Company:Friden (P)
Internal Links:Quadratwurzel
Keywords:
Link to the patent office:
(without guarantee)
 US3159341 (espacenet),  US3159341 (uspto)


improvement of Patent:US2736494 with twelve instead of ten digits w/o redesigning or changing timing of existing machine