by [Medical instruments; X-ray equipment] Invengineering.
Belmar, NJ:: Invengineering, [ca. 1956]., 1956. Advertisement and instructions for a newly invented "Pallidectomy Guide." 4to. ;  pp. 1 double-sided ad sheet and separate 1 p. instructions, 1 photograph and 1 illustration of device. Near fine. "Designed expressly to reach the globus pallidus with the tip of a rigid catheter, this equipment represents the ultimate in simplicity of design. To the original Model 67 instrument has been added a new attachment for a 'superior-lateral' approach" [ad]. (Inventory #: M12813)
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