CA1158572A - Globules creux a faible permeabilite, et canalisations remplies desdits globules pour son allegement temporaire - Google Patents

Globules creux a faible permeabilite, et canalisations remplies desdits globules pour son allegement temporaire

Info

Publication number
CA1158572A
CA1158572A CA000382474A CA382474A CA1158572A CA 1158572 A CA1158572 A CA 1158572A CA 000382474 A CA000382474 A CA 000382474A CA 382474 A CA382474 A CA 382474A CA 1158572 A CA1158572 A CA 1158572A
Authority
CA
Canada
Prior art keywords
spheres
pipe
water
hollow
filled
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
CA000382474A
Other languages
English (en)
Inventor
Warren R. Beck
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Application granted granted Critical
Publication of CA1158572A publication Critical patent/CA1158572A/fr
Expired legal-status Critical Current

Links

Landscapes

  • Rigid Pipes And Flexible Pipes (AREA)
  • Laminated Bodies (AREA)
CA000382474A 1980-09-25 1981-07-24 Globules creux a faible permeabilite, et canalisations remplies desdits globules pour son allegement temporaire Expired CA1158572A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US19071880A 1980-09-25 1980-09-25
US190,718 1980-09-25

Publications (1)

Publication Number Publication Date
CA1158572A true CA1158572A (fr) 1983-12-13

Family

ID=22702475

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000382474A Expired CA1158572A (fr) 1980-09-25 1981-07-24 Globules creux a faible permeabilite, et canalisations remplies desdits globules pour son allegement temporaire

Country Status (3)

Country Link
JP (1) JPS5786685A (fr)
AU (1) AU546531B2 (fr)
CA (1) CA1158572A (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111713A (en) * 1975-01-29 1978-09-05 Minnesota Mining And Manufacturing Company Hollow spheres
JPS5336804U (fr) * 1976-09-06 1978-03-31

Also Published As

Publication number Publication date
AU7564781A (en) 1982-04-01
JPS5786685A (en) 1982-05-29
JPH0246827B2 (fr) 1990-10-17
AU546531B2 (en) 1985-09-05

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