AU546531B2 - Pipe with cover of low permeability hollow spheres - Google Patents
Pipe with cover of low permeability hollow spheresInfo
- 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
Links
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)
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 |
-
1981
- 1981-07-24 CA CA000382474A patent/CA1158572A/en not_active Expired
- 1981-09-24 AU AU75647/81A patent/AU546531B2/en not_active Ceased
- 1981-09-24 JP JP15132381A patent/JPS5786685A/en active Granted
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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