CA453203A - Apparatus to detect changes of voltages - Google Patents

Apparatus to detect changes of voltages

Info

Publication number
CA453203A
CA453203A CA453203A CA453203DA CA453203A CA 453203 A CA453203 A CA 453203A CA 453203 A CA453203 A CA 453203A CA 453203D A CA453203D A CA 453203DA CA 453203 A CA453203 A CA 453203A
Authority
CA
Canada
Prior art keywords
voltages
detect changes
detect
changes
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
CA453203A
Other languages
French (fr)
Inventor
P. Place Willard
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.)
Hitachi Rail STS USA Inc
Original Assignee
Union Switch and Signal Inc
Publication date
Application granted granted Critical
Publication of CA453203A publication Critical patent/CA453203A/en
Expired legal-status Critical Current

Links

CA453203A Apparatus to detect changes of voltages Expired CA453203A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA453203T

Publications (1)

Publication Number Publication Date
CA453203A true CA453203A (en) 1948-12-07

Family

ID=35570932

Family Applications (1)

Application Number Title Priority Date Filing Date
CA453203A Expired CA453203A (en) Apparatus to detect changes of voltages

Country Status (1)

Country Link
CA (1) CA453203A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3304421A (en) * 1963-05-03 1967-02-14 Westinghouse Air Brake Co Automatic propulsion and brake control for unmanned trains

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3304421A (en) * 1963-05-03 1967-02-14 Westinghouse Air Brake Co Automatic propulsion and brake control for unmanned trains

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