Add to ORKGPatent for improvements to telephone transmitters by transmitting the sound waves into electrical currents
Patent for an invention to improve transmitting vocals and other sounds. It is a magneto telephonic ...
Patent for a machine that telegraphs messages between distant points by means of induced currents th...
Patent for reduction of movements in an improved telephone call box with illustrations
Patent for a granulated-electrode phone transmitter that is designed to be simple and "constructed s...
Patent for a new and improved telephone. This design "consists, first, in a set of U-shaped elastic ...
Patent for "a sounder wherein a finger-lever and sounding-lever are combined together with a spring"...
Patent for a simple and effective magneto telephone with a newly designed apparatus that allows the ...
Patent for a new and improved electric call or signal apparatus. This design consists in "a telegrap...
The increase in the range of laying telephone lines at the beginning of the 20th century raised the ...
Patent for "a single and effectual magneto telephone bot in receiving and transmitting and improving...
Patent for improvements in the construction of devices for ringing bells, including illustrations
Patent for "a device which will support the weight of the telephone-receiver on the switch-lever whe...
The Tone Generator described in these proceedings a year ago has been used successfully as a telepho...
Citation: Lyman, Charles W. The recent developments of the telephone. Senior thesis, Kansas State Ag...
The Tone Generator described in these proceedings a year ago has been used successfully as a telepho...
Patent for an invention to improve transmitting vocals and other sounds. It is a magneto telephonic ...
Patent for a machine that telegraphs messages between distant points by means of induced currents th...
Patent for reduction of movements in an improved telephone call box with illustrations
Patent for a granulated-electrode phone transmitter that is designed to be simple and "constructed s...
Patent for a new and improved telephone. This design "consists, first, in a set of U-shaped elastic ...
Patent for "a sounder wherein a finger-lever and sounding-lever are combined together with a spring"...
Patent for a simple and effective magneto telephone with a newly designed apparatus that allows the ...
Patent for a new and improved electric call or signal apparatus. This design consists in "a telegrap...
The increase in the range of laying telephone lines at the beginning of the 20th century raised the ...
Patent for "a single and effectual magneto telephone bot in receiving and transmitting and improving...
Patent for improvements in the construction of devices for ringing bells, including illustrations
Patent for "a device which will support the weight of the telephone-receiver on the switch-lever whe...
The Tone Generator described in these proceedings a year ago has been used successfully as a telepho...
Citation: Lyman, Charles W. The recent developments of the telephone. Senior thesis, Kansas State Ag...
The Tone Generator described in these proceedings a year ago has been used successfully as a telepho...
Patent for an invention to improve transmitting vocals and other sounds. It is a magneto telephonic ...
Patent for a machine that telegraphs messages between distant points by means of induced currents th...
Patent for reduction of movements in an improved telephone call box with illustrations