IP Library Granted Patent US 6,688,561
Granted Patent Utility
US 6,688,561 · Confirmation No. 6681

REMOTE MONITORING OF GRADE CROSSING WARNING EQUIPMENT

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Code Description Pages PDF
2010-08-12 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2010-08-12 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2003-10-27 IFEE Issue Fee Payment (PTO-85B) 2 View
2003-10-27 C.AD Change of Address 1 View
2003-10-27 LET. Miscellaneous Incoming Letter 1 View
2002-06-17 TRNA Transmittal of New Application 3 View
2002-06-17 SPEC Specification 11 View
2002-06-17 CLM Claims 5 View
2002-06-17 ABST Abstract 1 View
2002-06-17 DRW Drawings-only black and white line drawings 3 View
2002-06-17 OATH Oath or Declaration filed 3 View
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Quick Facts
Patent No.
US 6,688,561
App. No.
10/173,491
Filed
2002-06-17
Granted
2004-02-10
Pub. No.
US20030122039A1
Art Unit
3617
PTA
0 days