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Patent
   D305165
Priority
Aug 06 1987
Filed
Aug 06 1987
Issued
Dec 19 1989
Expiry
Dec 19 2003
Inventors
Rudolph, H…
Assg.orig
Hans Rudol…
Assg.curr
Hans Rudol…
Entity
unknown
Referenced by
42
References
11
Maint.:
n/a
The ornamental design for a two way check respiratory valve, as shown and described.

FIG. 1 is a perspective view of a two way check respiratory valve showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof, the opposite side being a mirror image; and

FIG. 5 is a top plan view thereof, the bottom plan view being a mirror image.
INVENTORS:

Rudolph, Hans, Rudolph, Kevin

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ER2514,
ER4318,
ER4707,
ER6432,
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
3643686,
4436090, Jan 22 1979 Piston actuated, pilot valve operated breathing regulator
4489721, Dec 30 1982 The Regents of the University of California Double lumen tube adaptor and valve system for medical anesthesia circuits
4493339, May 05 1982 Parker Intangibles LLC Air valve for a breathing system
D276464, Apr 23 1982 Allegiance Corporation Respiratory gas flow manifold
D276465, Apr 23 1982 Allegiance Corporation Straight flow manifold
D300270, Mar 16 1987 Hans Rudolph, Inc. Four-way T-shaped respiratory valve
D300271, Mar 16 1987 Hans Rudolph Inc. Three-way T-shaped respiratory valve with single balloon
D300272, May 18 1987 Hans Rudolph, Inc. Three-way T-shaped respiratory valve with dual balloon
D300273, Mar 16 1987 Hans Rudolph Inc. Four way respiratory valve with dual balloon
D300274, Mar 16 1987 Hans Rudolph, Inc. Four way respiratory valve
ASSIGNMENT RECORDS    Assignment records on the USPTO
///
Executed onAssignorAssigneeConveyanceFrameReelDoc
Jul 28 1987RUDOLPH, HANSHans Rudolph, IncASSIGNMENT OF ASSIGNORS INTEREST 0047540619 pdf
Jul 28 1987RUDOLPH, KEVIN A Hans Rudolph, IncASSIGNMENT OF ASSIGNORS INTEREST 0047540619 pdf
Aug 06 1987Hans Rudolph, Inc.(assignment on the face of the patent)
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