IP Library › Granted Patent US 6,639,671
Granted Patent Utility Small
US 6,639,671 · Confirmation No. 3026

WIDE-RANGE PARTICLE COUNTER

Inventor: Benjamin Y.H. Liu
Patented Case View Patent ↗
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2005-10-25 COCOUT Certificate of Correction - Post Issue Communication 1 View
2005-04-14 EBCC.AD Notice of Change of Address Place in File Wrapper Due to Electronic Business Center(EBC) Customer Number Update 1 View
2003-08-13 IFEE Issue Fee Payment (PTO-85B) 1 View
2003-08-13 LET. Miscellaneous Incoming Letter 2 View
2003-08-13 DRW Drawings-only black and white line drawings 5 View
2002-03-01 TRNA Transmittal of New Application 2 View
2002-03-01 SPEC Specification 31 View
2002-03-01 CLM Claims 10 View
2002-03-01 ABST Abstract 1 View
2002-03-01 OATH Oath or Declaration filed 2 View
2002-03-01 LET. Miscellaneous Incoming Letter 1 View
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Quick Facts
Patent No.
US 6,639,671
App. No.
10/087,491
Filed
2002-03-01
Granted
2003-10-28
Art Unit
2877
PTA
0 days