IP Library Granted Patent US 6,494,224
Granted Patent Utility Small
US 6,494,224 · Confirmation No. 7589

COLLAPSIBLE STRUCTURES

Inventor: Yu Zheng
⬇ PDF
Code Description Pages PDF
2001-09-17 TRNA Transmittal of New Application 2 View
2001-09-17 A.PE Preliminary Amendment 4 View
2001-09-17 SPEC Specification 14 View
2001-09-17 CLM Claims 3 View
2001-09-17 ABST Abstract 1 View
2001-09-17 DRW Drawings-only black and white line drawings 15 View
2001-09-17 OATH Oath or Declaration filed 2 View
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Quick Facts
Patent No.
US 6,494,224
App. No.
09/954,323
Filed
2001-09-17
Granted
2002-12-17
Pub. No.
US20020029795A1
Art Unit
3634
PTA
-46 days