CA424269A - Appareil de surveillance de canalisation - Google Patents

Appareil de surveillance de canalisation

Info

Publication number
CA424269A
CA424269A CA424269A CA424269DA CA424269A CA 424269 A CA424269 A CA 424269A CA 424269 A CA424269 A CA 424269A CA 424269D A CA424269D A CA 424269DA CA 424269 A CA424269 A CA 424269A
Authority
CA
Canada
Prior art keywords
pipe line
surveying apparatus
line surveying
pipe
surveying
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
CA424269A
Other languages
English (en)
Inventor
J. Penther Carl
B. Rolfson Francis
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.)
Shell Development Co
Original Assignee
Shell Development Co
Publication date
Application granted granted Critical
Publication of CA424269A publication Critical patent/CA424269A/fr
Expired legal-status Critical Current

Links

CA424269A Appareil de surveillance de canalisation Expired CA424269A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA424269T

Publications (1)

Publication Number Publication Date
CA424269A true CA424269A (fr) 1944-12-05

Family

ID=35535283

Family Applications (1)

Application Number Title Priority Date Filing Date
CA424269A Expired CA424269A (fr) Appareil de surveillance de canalisation

Country Status (1)

Country Link
CA (1) CA424269A (fr)

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