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Patent
   D347469
Priority
May 31 1991
Filed
May 31 1991
Issued
May 31 1994
Expiry
May 31 2008
Inventors
Hunniford,…
Assg.orig
DAVIS WATE…
Assg.curr
USFilter C…
Entity
unknown
Referenced by
0
References
21
Maint.:
n/a
The ornamental design for an air scrubber unit for use in removal of pollutants from the air, as shown and described.

FIG. 1 is a right side view of an air scrubber unit for use in removal of pollutants from the air showing my new design, the left side being identical to that shown;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof; and,

FIG. 4 is a rear view thereof.
INVENTORS:

Hunniford, David J.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
1657822,
1790975,
1993175,
2585440,
2603354,
2716489,
2879893,
3282432,
3312348,
3768234,
3936281, Mar 30 1973 Sudoldenburger Tierfrischmehl-Anlagengesellschaft Method and apparatus for deodorizing waste gases
4039307, Feb 13 1976 General Electric Environmental Services, Incorporated Countercurrent flow horizontal spray absorber
4157962, Nov 18 1977 Filtration method and apparatus
4211656, Jun 26 1978 Liquid treating system
4251486, Nov 16 1977 Method and apparatus for decomposing injurious substances
4588535, Apr 01 1983 Installation for the treatment of combustion gases
4642188, May 29 1985 Dover Corporation Backwash apparatus for multi element filter unit
692255,
973120,
DE2658750,
NL25116,
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
May 28 1991HUNNIFORD, DAVID J DAVIS WATER & WASTE INDUSTRIES, INC A CORPORATION OF DELAWAREASSIGNMENT OF ASSIGNORS INTEREST 0057240064 pdf
May 31 1991Davis Water & Waste Industries, Inc.(assignment on the face of the patent)
Aug 26 1996DAVIS WATER & WASTE INDUSTRIES, INC U S FILTER DAVIS, INC CHANGE OF NAME SEE DOCUMENT FOR DETAILS 0146240615 pdf
Oct 25 1996U S FILTER DAVIS, INC U S FILTER DISTRIBUTION SYSTEMS, INC CHANGE OF NAME SEE DOCUMENT FOR DETAILS 0146240628 pdf
Oct 31 1996U S FILTER DISTRIBUTION SYSTEMS, INC U S FILTER DISTRIBUTION SYSTEMS, INC CHANGE OF NAME SEE DOCUMENT FOR DETAILS 0146240657 pdf
Oct 31 1996U S FILTER DISTRIBUTION SYSTEMS, INC U S FILTER DISTRIBUTION GROUP, INC CHANGE OF NAME SEE DOCUMENT FOR DETAILS 0146240657 pdf
Oct 31 1996U S FILTER DISTRIBUTION SYSTEMS, INC U S FILTER DISTRIBUTION GROUP, INC CORRECTIVE ASSIGNMENT0146530014 pdf
Aug 08 2002U S FILTER DISTRIBUTION GROUP, INC United States Filter CorporationASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0131840634 pdf
Jul 31 2004United States Filter CorporationUSFilter CorporationASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0150930586 pdf
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