IP Library › Granted Patent US 6,639,194
Granted Patent Utility
US 6,639,194 · Confirmation No. 1188

METHOD FOR MANUFACTURING A MULTIPLE WALLED TUBE

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 Code Description Pages PDF
2001-08-07 TRNA Transmittal of New Application 12 View
2001-08-07 A.PE Preliminary Amendment 5 View
2001-08-07 SPEC Specification 10 View
2001-08-07 CLM Claims 2 View
2001-08-07 ABST Abstract 1 View
2001-08-07 DRW Drawings-only black and white line drawings 4 View
2001-08-07 OATH Oath or Declaration filed 3 View
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Quick Facts
Patent No.
US 6,639,194
App. No.
09/923,818
Filed
2001-08-07
Granted
2003-10-28
Pub. No.
US20020092891A1
Art Unit
1725
PTA
-35 days