IP Library › Granted Patent US 6,637,348
Granted Patent Utility
US 6,637,348 · Confirmation No. 6256

LEVEL-ADJUSTABLE MAIN SPRING AND ACTIVELY BIASED EMERGENCY SPRING WITH FAIL-SAFE BEHAVIOR

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 Code Description Pages PDF
2003-08-08 IFEE Issue Fee Payment (PTO-85B) 1 View
2003-08-07 LET. Miscellaneous Incoming Letter 1 View
2003-08-07 DRW Drawings-only black and white line drawings 5 View
2002-10-01 TRNA Transmittal of New Application 3 View
2002-10-01 SPEC Specification 7 View
2002-10-01 CLM Claims 2 View
2002-10-01 ABST Abstract 1 View
2002-10-01 OATH Oath or Declaration filed 3 View
2002-07-02 TRNA Transmittal of New Application 6 View
2002-07-02 ADS Application Data Sheet 3 View
2002-07-02 A.PE Preliminary Amendment 2 View
2002-07-02 SPEC Specification 9 View
2002-07-02 DRW Drawings-only black and white line drawings 5 View
2002-07-02 OATH Oath or Declaration filed 3 View
2002-07-02 LET. Miscellaneous Incoming Letter 1 View
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Quick Facts
Patent No.
US 6,637,348
App. No.
10/188,358
Filed
2002-07-02
Granted
2003-10-28
Examiner
LE, MARK T
Art Unit
3617
PTA
-3 days