Pressure gauge
United States Patent 2447739
US Patent References:
/0466547.html
- - 0466547

/0697623.html
- - 0697623

/1166070.html
- - 1166070


Inventors:
Courtney, Edward J.
Publication Date:
08/24/1948
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Assignee:
Courtney, Edward J.
Primary Class:
73/732
International Classes:
G01L7/04; G01L7/02