Add to ORKGPatent for a machine that telegraphs messages between distant points by means of induced currents that produce magnets without the use of battery current, including illustrations
Paged continuously.Pt. I. Electricity and galvanism.--pt. II. Magnetism and the electric telegraph.M...
"Patent, dated 12th June, 1841. <Copy> Specification of Edward Palmer, for 'Improvements in producin...
Patent for invention that applies the use of electricity to suitable electrically-operated devices t...
Patent for a simple and effective magneto telephone with a newly designed apparatus that allows the ...
Patent for an invention to improve transmitting vocals and other sounds. It is a magneto telephonic ...
Patent for "a single and effectual magneto telephone bot in receiving and transmitting and improving...
Patent for a new and improved electric call or signal apparatus. This design consists in "a telegrap...
Patent for a new and improved telephone. This design "consists, first, in a set of U-shaped elastic ...
Patent for improvements to telephone transmitters by transmitting the sound waves into electrical cu...
In a highly developed era, of course, it will require the use of electricity to continue to increase...
Patent for a simple and efficient electric alarm to be used for vault protection. It is a magnet, wh...
Patent for a new invention which uses a combination of radiation and levers in order more efficientl...
The applications involving electromagnetic fields are so pervasive that it is difficult to estimate ...
Patent for Dynamo Electric Machine. "in our improved dynamo-electric machine we combine in the armat...
Paged continuously; v. 1; viii, 522 p.; v. 2; iv, 523-910 p.pt. I. Electricity and galvanism.--pt. I...
Paged continuously.Pt. I. Electricity and galvanism.--pt. II. Magnetism and the electric telegraph.M...
"Patent, dated 12th June, 1841. <Copy> Specification of Edward Palmer, for 'Improvements in producin...
Patent for invention that applies the use of electricity to suitable electrically-operated devices t...
Patent for a simple and effective magneto telephone with a newly designed apparatus that allows the ...
Patent for an invention to improve transmitting vocals and other sounds. It is a magneto telephonic ...
Patent for "a single and effectual magneto telephone bot in receiving and transmitting and improving...
Patent for a new and improved electric call or signal apparatus. This design consists in "a telegrap...
Patent for a new and improved telephone. This design "consists, first, in a set of U-shaped elastic ...
Patent for improvements to telephone transmitters by transmitting the sound waves into electrical cu...
In a highly developed era, of course, it will require the use of electricity to continue to increase...
Patent for a simple and efficient electric alarm to be used for vault protection. It is a magnet, wh...
Patent for a new invention which uses a combination of radiation and levers in order more efficientl...
The applications involving electromagnetic fields are so pervasive that it is difficult to estimate ...
Patent for Dynamo Electric Machine. "in our improved dynamo-electric machine we combine in the armat...
Paged continuously; v. 1; viii, 522 p.; v. 2; iv, 523-910 p.pt. I. Electricity and galvanism.--pt. I...
Paged continuously.Pt. I. Electricity and galvanism.--pt. II. Magnetism and the electric telegraph.M...
"Patent, dated 12th June, 1841. <Copy> Specification of Edward Palmer, for 'Improvements in producin...
Patent for invention that applies the use of electricity to suitable electrically-operated devices t...