IP Library Granted Patent US 6,581,676
Granted Patent Utility
US 6,581,676 · Confirmation No. 8918

ROTOR DESIGN WITH DOUBLE SEALS FOR VERTICAL AIR PREHEATERS

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Code Description Pages PDF
2015-01-16 C.AD Change of Address 1 View
2015-01-16 N417 Electronic Filing System Acknowledgment Receipt 2 View
2001-10-10 TRNA Transmittal of New Application 9 View
2001-10-10 SPEC Specification 11 View
2001-10-10 CLM Claims 4 View
2001-10-10 ABST Abstract 1 View
2001-10-10 DRW Drawings-only black and white line drawings 13 View
2001-10-10 LET. Miscellaneous Incoming Letter 1 View
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Quick Facts
Patent No.
US 6,581,676
App. No.
09/974,508
Filed
2001-10-10
Granted
2003-06-24
Pub. No.
US20020070001A1
Art Unit
3743
PTA
-26 days