CA423901A - Electrical signalling and control system - Google Patents

Electrical signalling and control system

Info

Publication number
CA423901A
CA423901A CA423901A CA423901DA CA423901A CA 423901 A CA423901 A CA 423901A CA 423901 A CA423901 A CA 423901A CA 423901D A CA423901D A CA 423901DA CA 423901 A CA423901 A CA 423901A
Authority
CA
Canada
Prior art keywords
control system
electrical signalling
signalling
electrical
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA423901A
Other languages
French (fr)
Inventor
Arthur Harrison William
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA423901A publication Critical patent/CA423901A/en
Expired legal-status Critical Current

Links

CA423901A Electrical signalling and control system Expired CA423901A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA423901T

Publications (1)

Publication Number Publication Date
CA423901A true CA423901A (en) 1944-11-21

Family

ID=35534912

Family Applications (1)

Application Number Title Priority Date Filing Date
CA423901A Expired CA423901A (en) Electrical signalling and control system

Country Status (1)

Country Link
CA (1) CA423901A (en)

Similar Documents

Publication Publication Date Title
CA423901A (en) Electrical signalling and control system
CA417944A (en) Electrical signalling system
CA419281A (en) Electrical signalling system
CA423902A (en) Electrical signalling system
CA424316A (en) Electrical selective signalling system
CA422454A (en) Electric control system
AU121727B2 (en) Electrical control system
CA420783A (en) Electrical system
CA424201A (en) Electrical system
AU123748B2 (en) Improvements in electrical signalling systems
CA423274A (en) Circuit control system
AU121784B2 (en) Signalling system
AU127435B2 (en) Signalling system
CA418907A (en) Signalling system
CA422032A (en) Signalling system
CA422196A (en) Signalling system
CA423175A (en) Signalling system
CA423176A (en) Signalling system
CA423178A (en) Signalling system
CA423433A (en) Signalling system
CA423830A (en) Signalling system
CA423897A (en) Signalling system
CA424024A (en) Signalling system
CA424754A (en) Signalling system
CA420959A (en) Electrical regulating system