Title:
Automatically retractable needle syringe
United States Patent 3306290
US Patent References:
Hypodermic syringe
- - 2460039

Injection apparatus
- - 2701566

Hypodermic injection apparatus
- - 2752918

Dental syringe adapter
- - 3046985


Inventors:
Weltman, Harold S.
Publication Date:
02/28/1967
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Assignee:
Weltman, Harold S.
Primary Class:
604/197
Other Classes:
604/221, 604/227, 604/201
International Classes:
A61M5/32; A61M5/24
Foreign References:
AU164214B