CA439689A - Voltage changes detecting apparatus - Google Patents

Voltage changes detecting apparatus

Info

Publication number
CA439689A
CA439689A CA439689A CA439689DA CA439689A CA 439689 A CA439689 A CA 439689A CA 439689 A CA439689 A CA 439689A CA 439689D A CA439689D A CA 439689DA CA 439689 A CA439689 A CA 439689A
Authority
CA
Canada
Prior art keywords
detecting apparatus
voltage changes
changes detecting
voltage
detecting
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
CA439689A
Other languages
French (fr)
Inventor
Volz Carl
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 CA439689A publication Critical patent/CA439689A/en
Expired legal-status Critical Current

Links

CA439689A Voltage changes detecting apparatus Expired CA439689A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA439689T

Publications (1)

Publication Number Publication Date
CA439689A true CA439689A (en) 1947-02-11

Family

ID=35554923

Family Applications (1)

Application Number Title Priority Date Filing Date
CA439689A Expired CA439689A (en) Voltage changes detecting apparatus

Country Status (1)

Country Link
CA (1) CA439689A (en)

Similar Documents

Publication Publication Date Title
CA439689A (en) Voltage changes detecting apparatus
CA441394A (en) Measuring apparatus
CA441395A (en) Measuring apparatus
CA443933A (en) Measuring apparatus
CA445715A (en) Measuring apparatus
AU142658B2 (en) Improvements inx-ray apparatus
CA441745A (en) Testing apparatus
CA442409A (en) Distance measuring apparatus
CA439164A (en) Gun-control apparatus
CA440107A (en) Snow-removal apparatus
CA440108A (en) Snow-removal apparatus
CA445426A (en) Liquid-elevating apparatus
CA439113A (en) Gauging apparatus
CA444342A (en) Signal apparatus
CA443280A (en) Voltage indicator
AU134073B2 (en) Measuring device
CA442444A (en) Measuring device
CA444854A (en) Measuring device
CA437415A (en) Measuring apparatus
AU1181147A (en) Improvements inx-ray apparatus
CA445663A (en) Foot measuring apparatus
CA441327A (en) Electrical apparatus
CA439309A (en) Electrical apparatus
CA439760A (en) Electrical apparatus
CA439180A (en) Electrical apparatus