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Patent
   D325070
Priority
Jun 09 1989
Filed
Jun 09 1989
Issued
Mar 31 1992
Expiry
Mar 31 2006
Inventors
Kopf, Henr…
Assg.orig
NCSRT, INC
Assg.curr
NCSRT, INC
Entity
unknown
Referenced by
48
References
35
Maint.:
n/a
The ornamental design for a filter sheet, as shown and described.

FIG. 1 is a top plan view of a filter sheet showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof, the opposite side being identical;

FIG. 4 is a front elevational view thereof, the rear being identical; and,

FIG. 5 is a front elevational view thereof, on an enlarged scale, partially shown for clarity and ease of illustration.
INVENTORS:

Kopf, Henry B.

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ASSIGNMENT RECORDS    Assignment records on the USPTO
//
Executed onAssignorAssigneeConveyanceFrameReelDoc
Jan 24 2005KOPF, HENRY B NCSRT, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0157220052 pdf
Sep 09 2008NCSRT, INC Square 1 BankSECURITY INTEREST SEE DOCUMENT FOR DETAILS 0215610265 pdf
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