AU546531B2 - Pipe with cover of low permeability hollow spheres - Google Patents

Pipe with cover of low permeability hollow spheres

Info

Publication number
AU546531B2
AU546531B2 AU75647/81A AU7564781A AU546531B2 AU 546531 B2 AU546531 B2 AU 546531B2 AU 75647/81 A AU75647/81 A AU 75647/81A AU 7564781 A AU7564781 A AU 7564781A AU 546531 B2 AU546531 B2 AU 546531B2
Authority
AU
Australia
Prior art keywords
pipe
cover
low permeability
hollow spheres
permeability hollow
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.)
Ceased
Application number
AU75647/81A
Other versions
AU7564781A (en
Inventor
Warren Randall 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
Publication of AU7564781A publication Critical patent/AU7564781A/en
Application granted granted Critical
Publication of AU546531B2 publication Critical patent/AU546531B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

AU75647/81A 1980-09-25 1981-09-24 Pipe with cover of low permeability hollow spheres Ceased AU546531B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US19071880A 1980-09-25 1980-09-25
US190718 2002-10-10

Publications (2)

Publication Number Publication Date
AU7564781A AU7564781A (en) 1982-04-01
AU546531B2 true AU546531B2 (en) 1985-09-05

Family

ID=22702475

Family Applications (1)

Application Number Title Priority Date Filing Date
AU75647/81A Ceased AU546531B2 (en) 1980-09-25 1981-09-24 Pipe with cover of low permeability hollow spheres

Country Status (3)

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

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 (en) * 1976-09-06 1978-03-31

Also Published As

Publication number Publication date
JPH0246827B2 (en) 1990-10-17
JPS5786685A (en) 1982-05-29
CA1158572A (en) 1983-12-13
AU7564781A (en) 1982-04-01

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