Improvements in Buzzer Sets for Learning Telegraphy.
GB121016A
Improvements in Silencing Pads for Telephone or Speaking Tube Earpieces and Earstoppers.
GB191510059A
Improvements in Vibrating Make and Brake Devices for use in Electric Signalling.
GB191507840A
Improvements in Vibrating Make and Break Devices for use in Electric Signalling.
GB191422199A
Improvements in Electric Signals.
US1181427A
Means for signaling over electric light circuits or power mains.
GB191222649A
Improvements in Means for Signalling and Controlling Apparatus by Means of Electrical Oscillations in Electric Supply Mains.
GB190225232A
Improvements in Fire Alarm Posts
GB190218311A
Improvements in Automatic Fire Alarms
US703759A
Electrical sparking device.
GB190109770A
Improvements in Electrical Sparking Devices for Firing the Charges in Internal Combustion Engines, and for Similar Purposes.
GB190014086A
Improvements in Wireless or Hertzian Telegraphy.
GB189911900A
Improvements in Locks and Keys.
GB189903130A
Improvements in Electric Lamps.
GB189630123A
Improvements in Means of Telegraphing through Long Uninsulated or Badly Insulated Submarine or other Submerged Cables, and in Maintaining Communication notwithstanding a Break in the Continuity of the Conductor.
GB189626880A
Improvements in Bed Warming Apparatus and Arrangements.
GB189514627A
Improvements in Electric Fire Alarms.
GB189420382A
Improvements in Electric Telephones, and Means of Signalling thereon.
GB189404021A
Improvements in Telephone Transmitters, and Arrangements for same.
