PKK Library Search for 'au:"Affel,H A"'

CARRIER TELEPHONE SYSTEMS APPLICATION TO RAILROAD CIRCUITS

By Affel,H A. 1937 . 12 , Bound With Btl Mono B-1000-1006,1008-1030.Lack No-1002,1006,1010,1017,1021,1023,1026.

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USE OF TELEPHONE REPEATERS WITH TRAIN DISPATCHING AND MESSAGE CIRCUITS

By Affel,H A. Electrochemical Society, Usa 1932 . 14 , Bound With Bts Mono B-707-722,728-796,Lack No. 708,10-14,17-18,20,24-27,29-30,33-34,36-43,45-47,50-52,54-55,57-60,64-67,69-72,74-82,88,85-86,88,91-93

Place Hold on USE OF TELEPHONE REPEATERS WITH TRAIN DISPATCHING AND MESSAGE CIRCUITS

A TWELVE-CHANNEL CARRIER TELEPHONE SYSTEM FOR OPEN-WIRE LINES

By Kendall,B W. 1939 , Bound With Bts Mono B-1100-1125,1127-1139.Lack No-1117,1119,1121,1124,1131.

Place Hold on A TWELVE-CHANNEL CARRIER TELEPHONE SYSTEM FOR OPEN-WIRE LINES

TRANSMITTED FREQUENCY RANGE FOR CIRCUITS IN BROAD-NAND SYSTEMS

By AFFEL,H A. 1937 . ,6,,,,,, , Bound with BTL MONO B-1034-1059, Lack no. 1032-33,41,47

Place Hold on TRANSMITTED FREQUENCY RANGE FOR CIRCUITS IN BROAD-NAND SYSTEMS