IP Library Granted Patent US 6,623,220
Granted Patent Utility
US 6,623,220 · Confirmation No. 8679

QUICK CHANGE MANDREL ASSEMBLY FOR USE WITH A HOLE SAW AND A PILOT DRILL BIT

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Code Description Pages PDF
2003-07-03 IFEE Issue Fee Payment (PTO-85B) 1 View
2003-07-03 LET. Miscellaneous Incoming Letter 2 View
2001-08-30 TRNA Transmittal of New Application 2 View
2001-08-30 SPEC Specification 14 View
2001-08-30 CLM Claims 7 View
2001-08-30 ABST Abstract 1 View
2001-08-30 DRW Drawings-only black and white line drawings 11 View
2001-08-30 OATH Oath or Declaration filed 2 View
2001-08-30 LET. Miscellaneous Incoming Letter 1 View
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Quick Facts
Patent No.
US 6,623,220
App. No.
09/943,069
Filed
2001-08-30
Granted
2003-09-23
Pub. No.
US20020028117A1
Art Unit
3722
PTA
-70 days