Patrick Chng

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Singapore, SG

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Patents Grantslast 30 patents

Information Patent Grant
Syringe with retractable needle assembly
- Patent number 7,044,931
- Issue date May 16, 2006
- Hypoguard USA Inc.
- Vance D. Campbell, Jr.
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
Syringe with retractable needle assembly
- Publication number 20040006314
- Publication date Jan 8, 2004
- Vance D. Campbell
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE