CA1073227A - Tuyau de drainage souterrain - Google Patents

Tuyau de drainage souterrain

Info

Publication number
CA1073227A
CA1073227A CA298,804A CA298804A CA1073227A CA 1073227 A CA1073227 A CA 1073227A CA 298804 A CA298804 A CA 298804A CA 1073227 A CA1073227 A CA 1073227A
Authority
CA
Canada
Prior art keywords
pipe
liquid
protrusions
collecting pipe
underdrainage
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
CA298,804A
Other languages
English (en)
Inventor
Yoshio Uehara
Minoru Inaba
Yoshihisa Kusumi
Noriyuki Ishii
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.)
Mitsui Petrochemical Industries Ltd
Original Assignee
Mitsui Petrochemical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsui Petrochemical Industries Ltd filed Critical Mitsui Petrochemical Industries Ltd
Priority to CA298,804A priority Critical patent/CA1073227A/fr
Application granted granted Critical
Publication of CA1073227A publication Critical patent/CA1073227A/fr
Expired legal-status Critical Current

Links

Landscapes

  • Filtering Materials (AREA)
CA298,804A 1978-03-13 1978-03-13 Tuyau de drainage souterrain Expired CA1073227A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA298,804A CA1073227A (fr) 1978-03-13 1978-03-13 Tuyau de drainage souterrain

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA298,804A CA1073227A (fr) 1978-03-13 1978-03-13 Tuyau de drainage souterrain

Publications (1)

Publication Number Publication Date
CA1073227A true CA1073227A (fr) 1980-03-11

Family

ID=4110971

Family Applications (1)

Application Number Title Priority Date Filing Date
CA298,804A Expired CA1073227A (fr) 1978-03-13 1978-03-13 Tuyau de drainage souterrain

Country Status (1)

Country Link
CA (1) CA1073227A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5688073A (en) * 1993-06-11 1997-11-18 Brodeur; Joseph Clement Earth drains

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5688073A (en) * 1993-06-11 1997-11-18 Brodeur; Joseph Clement Earth drains

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Legal Events

Date Code Title Description
MKEX Expiry