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Patent
   D334235
Priority
Sep 19 1990
Filed
Sep 19 1990
Issued
Mar 23 1993
Expiry
Mar 23 2007
Inventors
Stachowiak…
Assg.orig
AMERICAN S…
Assg.curr
Conax Flor…
Entity
unknown
Referenced by
0
References
2
Maint.:
n/a
The ornamental design for a portable oxygen flow meter, as shown.

FIG. 1 is a top, front and right side perspective view of a portable oxygen flow meter showing our new design;

FIG. 2 is a bottom plan view; and,

FIG. 3 is a left side elevational view thereof.
INVENTORS:

Stachowiak, Krzysztof, Lebis, Zdenek F.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
4635647, Sep 07 1984 Incentive spirometer employing bellows air flow sensor
D325634, Mar 30 1990 Welch Allyn, Inc. Portable spirometer
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Aug 22 1990STACHOWIAK, KRZYSZTOFAMERICAN SAFETY FLIGHT SYSTEMS, INC ASSIGNMENT OF ASSIGNORS INTEREST 0054530772 pdf
Aug 22 1990LEBIS, ZDENEK F AMERICAN SAFETY FLIGHT SYSTEMS, INC ASSIGNMENT OF ASSIGNORS INTEREST 0054530772 pdf
Sep 19 1990American Safety Flight Systems, Inc.(assignment on the face of the patent)
Mar 31 1994AMERICAN SAFETY FLIGHT SYSTEMS, INC Conax Florida CorporationASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0070290573 pdf
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