IP Library Granted Patent US 6,557,477
Granted Patent Utility Small
US 6,557,477 · Confirmation No. 5195

RING PROTECTOR FOR PREVENTING TAMPERING OF VALVES POSITIONED INSIDE A RAILCAR DOME

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2020-02-07 OATH Oath or Declaration filed 22 View
2020-02-06 OATH Oath or Declaration filed 23 View
2002-07-30 TRNA Transmittal of New Application 3 View
2002-07-30 DRW Drawings-only black and white line drawings 7 View
2002-06-04 TRNA Transmittal of New Application 13 View
2002-06-04 SPEC Specification 8 View
2002-06-04 CLM Claims 4 View
2002-06-04 ABST Abstract 1 View
2002-06-04 DRW Drawings-only black and white line drawings 7 View
2002-06-04 OATH Oath or Declaration filed 2 View
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Quick Facts
Patent No.
US 6,557,477
App. No.
10/162,153
Filed
2002-06-04
Granted
2003-05-06
Art Unit
3617
PTA
0 days