Title:
Gastroscope
United States Patent 2453862
US Patent References:
/0373000.html
- - 0373000

/0548462.html
- - 0548462


Inventors:
Frederic, Salisbury Peter
Publication Date:
11/16/1948
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Assignee:
Frederic, Salisbury Peter
Primary Class:
600/146
Other Classes:
385/902
International Classes:
A61B1/005; A61B1/273