IP Library › Granted Patent US 5,573,040
Granted Patent Utility
US 5,573,040 · App. 08/603,205

Interlocked plastic-encased concrete pipe

Inventors: Mark W. Schumacher, Raymond L. Sterling
Patented Case View Patent ↗
Granted: Nov 12, 1996 Filed: Feb 20, 1996
Inventors
Mark W. Schumacher
Raymond L. Sterling
Assignee (at issue)
Pipeform LLC

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Quick Facts
Patent No.
US 5,573,040
App. No.
08/603,205
Filed
1996-02-20
Granted
1996-11-12
Kind
A