The development of a handset for telephone stations

[1] FREDERICK HA, 1931, BELL TELEPHONE Q

[2] FREDERICK HA, 1931, J ACOUSTI SOC AM JUL, P17

[3] JOHNSON KS, TRANSMISSION CIRCUIT, P105

[4] MARTIN WH, 1931, BELL SYSTEM TECH JAN, P116

[5] OLMSTEAD PS, 1929, J PHYS CHEM JAN, P69

[6] RHODES FL, BEGINNING TELEPHONY, P153

[7] SHAW LI, 1931, J CERAMIC SOC NOV, P851

[8] VONRAGNAR H, 1922, Z TECHNISCHE PHY OCT, P320

[9] VONRAGNAR H, 1922, Z TECHNISCHE PHY SEP, P290

[10] VONRAGNAR H, 1922, Z TECHNISCHE PHY NOV, P349

[1] FREDERICK HA, 1931, BELL TELEPHONE Q

[2] FREDERICK HA, 1931, J ACOUSTI SOC AM JUL, P17

[3] JOHNSON KS, TRANSMISSION CIRCUIT, P105

[4] MARTIN WH, 1931, BELL SYSTEM TECH JAN, P116

[5] OLMSTEAD PS, 1929, J PHYS CHEM JAN, P69

[6] RHODES FL, BEGINNING TELEPHONY, P153

[7] SHAW LI, 1931, J CERAMIC SOC NOV, P851

[8] VONRAGNAR H, 1922, Z TECHNISCHE PHY OCT, P320

[9] VONRAGNAR H, 1922, Z TECHNISCHE PHY SEP, P290

[10] VONRAGNAR H, 1922, Z TECHNISCHE PHY NOV, P349