IP Library Granted Patent US 6,558,538
Granted Patent Utility Small
US 6,558,538 · Confirmation No. 3951

METHOD AND DEVICE FOR PREVENTING THE CLOGGING OF A DRAINAGE SYSTEM

⬇ PDF
Code Description Pages PDF
2001-04-30 TRNA Transmittal of New Application 11 View
2001-04-30 SPEC Specification 11 View
2001-04-30 CLM Claims 3 View
2001-04-30 ABST Abstract 1 View
2001-04-30 DRW Drawings-only black and white line drawings 3 View
2001-04-30 OATH Oath or Declaration filed 10 View
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Quick Facts
Patent No.
US 6,558,538
App. No.
09/845,629
Filed
2001-04-30
Granted
2003-05-06
Pub. No.
US20020158028A1
Art Unit
1724
PTA
-51 days