IP Library › Granted Patent US 4,615,642
Granted Patent Utility
US 4,615,642 · App. 06/655,753

Variable porosity irrigation pipe

Inventor: James Mason
Patented Case View Patent ↗
Granted: Oct 7, 1986 Filed: Oct 1, 1984
Inventor
James Mason
Assignee (at issue)
Dasurat Enterprises PTE, Ltd.

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Quick Facts
Patent No.
US 4,615,642
App. No.
06/655,753
Filed
1984-10-01
Granted
1986-10-07
Kind
A