Signedplate on one side: Tungar / REG. U.S. PAT. OFFICE / BATTERY CHARGER / CAT. 277153 (GE logo) 60 CYCLES / VOLTS A.C. 115 48 CELLS / 3 CELLS 2 AMP. .25 AMP / THE SALE OF THE BULB OF THIS RECTIFIER BY THE GENERAL ELECTRIC / COMPANY CARRIES WITH IT A LICENSE UNDER ALL CLAIMS OF THE UNITED STATES / PATENTS WHICH THE GENERAL ELECTRIC COMPANY OWNS, OR UNDER WHICH IT / TO GRANT SUCH A LICENSE. WHICH CLAIMS COVER THE BULB AS / SUCH, AS WELL AS A LICENSE TO USE THE BULB IN A LICENSED RECTIFIER IN AN OUT- / FIT MANUFACTURED BY THE GENERAL ELECTRIC COMPANY OR BY ANY MANUFAC- / TURER LICENSED UNDER THE GENERAL ELECTRIC COMPANY'S UNITED STATES / PATENTS TO MAKE SUCH RECTIFIERS EXCEPT TO THIS EXTENT NO LICENSE IS / GRANTED OR IMPLIED UNDER ANY PATENT CLAIM COVERING THE BULB (OR IT'S / USE) IN COMBINATION WITH , OR AS AN ELEMENT OF, ANY SYSTEM OR PROCESS / OR FOR USE IN OR WITH AN UNLICENSED RECTIFIER OUTFIT OR PORTION THERE / OF NO LICENSE IS GRANTED TO USE THIS BULB FOR TELEGRAPH / TELEPHONE OR RADIO PURPOSES, WHICH HOWEVER, DO NOT INCLUDE THE MERE / CHARGING OF STORAGE BATTERIES. / THIS BULB IS NOT LICENSED TO BE EXAUSTED, REFILLED OR REPAIRED / NOR IS THE PATENTED METAL THEREIN CONTAINED LICENSED TO BE USED / EXCEPT IN THIS BULB. / PAT. (missing) B, 27,'12 DEC. 30,'13 MAY 18,'15 SEP. 21,'15 MAY 9,'16 JULY 18,'16 DEC. 12,'16 / (missing)T. 23,'17 NOV. 13,'17 MAY 14,'18 OCT. 11,'21 JUNE 24,'24 MAR. 10,'25 / GENERAL ELECTRIC CO., U.S.A. / No. 2##45