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Patent
   D758558
Priority
Mar 10 2014
Filed
Mar 10 2014
Issued
Jun 07 2016
Expiry
Jun 07 2030
Inventors
Belton, An…
Assg.orig
Illinois T…
Assg.curr
Illinois T…
Entity
unknown
Referenced by
5
References
123
Maint.:
n/a
The ornamental design for an air filtration device, as shown and described herein.

FIG. 1 is a top front right perspective view of an air filtration device showing our new design.

FIG. 2 is a top front left perspective view thereof

FIG. 3 is a top back right perspective view thereof.

FIG. 4 is a bottom back left perspective view thereof.

FIG. 5 is a front side elevation view thereof.

FIG. 6 is a rear side elevation view thereof.

FIG. 7 is a right side elevation view thereof.

FIG. 8 is a left side elevational view thereof.

FIG. 9 is a top plan view thereof; and,

FIG. 10 is a bottom plan view thereof.

The broken line showing of parts of the drawings is included for the purpose of illustrating use and environment and forms no part of the claimed design.
INVENTORS:

Belton, Antonio J., Francis, Ryan L., McPhilliamy, Stephen J., White, Jr., John S.

THIS PATENT IS REFERENCED BY THESE PATENTS:
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D902368, Dec 03 2018 XIAMEN VORK HEALTH INDUSTRY CO., LTD. Air purifier
D947345, Jul 24 2020 Air purifier
ER3025,
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ASSIGNMENT RECORDS    Assignment records on the USPTO
/////
Executed onAssignorAssigneeConveyanceFrameReelDoc
Mar 10 2014Illinois Tool Works Inc.(assignment on the face of the patent)
Mar 12 2014FRANCIS, RYAN L Illinois Tool Works IncASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0324410698 pdf
Mar 13 2014MCPHILLIAMY, STEPHEN J Illinois Tool Works IncASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0324410698 pdf
Mar 13 2014BELTON, ANTONIO J Illinois Tool Works IncASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0324410698 pdf
Mar 13 2014WHITE, JOHN S , JR Illinois Tool Works IncASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0324410698 pdf
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