Patent
   D421301
Priority
Jul 20 1998
Filed
Jul 20 1998
Issued
Feb 29 2000
Expiry
Feb 28 2014
Assg.orig
Entity
unknown
0
2
n/a
The ornamental design for a two position pressure demand inlet port adaptor, as shown and described.

FIG. 1 is a perspective view of a two position pressure demand inlet port adaptor, showing the new design.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a right-side elevational view thereof.

FIG. 5 is a left-side elevational view thereof.

FIG. 6 is a top plan view thereof.

FIG. 7 is a bottom plan view thereof.

FIG. 8 is a perspective view of a second embodiment of a two position pressure demand inlet port adaptor, showing the new design.

FIG. 9 is a front elevational view of the second embodiment shown in FIG. 8. The rear right side, left side, bottom and top elevational views are the same as those corresponding views illustrated in reference to the first embodiment.

FIG. 10 is a perspective view of a third embodiment of a two position pressure demand inlet port adaptor, showing the new design.

FIG. 11 is a front elevational view of the third embodiment shown in FIG. 10. The rear right side, bottom and top elevational views are the same as those corresponding views illustrated in reference to the first embodiment.

FIG. 12 is a perspective view of a fourth embodiment of a two position pressure demand inlet port adaptor, showing the new design; and,

FIG. 13 is a front elevational view of the fourth embodiment shown in FIG. 12. The rear right side, left side, bottom and top elevational views are the same as those corresponding views illustrated in reference to the first embodiment.

The broken lines shown in the drawings form no part of the claimed design. The shading shown in the drawings is provided merely to indicate the contour of the design; it is not intended to be indicative of any particular texture.

Knivsland, David P., Reischel, Joseph G., Bartholomew, Michael J.

Patent Priority Assignee Title
Patent Priority Assignee Title
4373520, Sep 28 1979 HER MAJESTY THE QUEEN AS REPRESENTED BY THE MINISTER OF NATIONAL DEFENCE OF HER MAJESTY S CANADIAN GOVERNMENT, OTTAWA, ONTARIO, CANADA Respirator speech unit/outlet valve
5224473, Mar 04 1991 UNDERSEA SENSOR SYSTEMS, INC Retrofitting gas mask voice amplifier unit with easily actuated switch means
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Jul 20 19983M Innovative Properties Company(assignment on the face of the patent)
Sep 08 1998REISCHEL, JOSEPH G Minnesota Mining and Manufacturing CompanyASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0094610475 pdf
Sep 08 1998BARTHOLOMEW, MICHAEL J Minnesota Mining and Manufacturing CompanyASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0094610475 pdf
Sep 08 1998KNIVSLAND, DAVID P Minnesota Mining and Manufacturing CompanyASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0094610475 pdf
Nov 01 1999Minnesota Mining and Manufacturing Company3M Innovative Properties CompanyASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0103660386 pdf
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