CA1283370C - Canalisation ondulee
- Google Patents
Canalisation ondulee
Info
Publication number
CA1283370C
CA1283370CCA000544809ACA544809ACA1283370CCA 1283370 CCA1283370 CCA 1283370CCA 000544809 ACA000544809 ACA 000544809ACA 544809 ACA544809 ACA 544809ACA 1283370 CCA1283370 CCA 1283370C
Authority
CA
Canada
Prior art keywords
pipe
corrugations
flat
flat portions
portions
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.)
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.)
Mid State Drainage Products Inc
Original Assignee
Mid State Drainage Products Inc
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 Mid State Drainage Products IncfiledCriticalMid State Drainage Products Inc
Priority to CA000544809ApriorityCriticalpatent/CA1283370C/fr
Application grantedgrantedCritical
Publication of CA1283370CpublicationCriticalpatent/CA1283370C/fr