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ID = 61767
United States of America (USA)
Brand: General Electric Co. (GE); Bridgeport CT, Syracuse NY
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Thyratron   Power-supply 
Identical to GL5720 = FG33 = 5720
First year 30.Apr.1948 Electron Tube Registration List

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Industrial
Filament Vf 5 Volts / If 4.5 Ampere / Direct
Description Anode voltage 1000, grid voltage +10 Gas-mercury triode thyratron with a positive control characteristic. This offers the advantage of a tube that will operate only with a positive voltage on the grid. It is ideally suited for applications which require that no current flows in the absence of grid excitation. Made by GE, Hytron, Philips, Westinghouse; also produced in Italy by Fivre.

Registered by GE as 5720 and marketed as GL5720.

Information source - - Manufacturers Literature   

Just Qvigstad
GL5720: Manufacturers documentation
Bruce Morgenstern

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