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Patent
   D328760
Priority
Nov 14 1989
Filed
May 11 1990
Issued
Aug 18 1992
Expiry
Aug 18 2006
Inventors
Knox, John…
Assg.orig
HEFENDEHL,…
Assg.curr
Helit Inno…
Entity
unknown
Referenced by
0
References
11
Maint.:
n/a
The ornamental design for a document holder, as shown and described.

FIG. 1 is a top, right front perspective view of a document holder showing my new design; and,

FIG. 2 is a bottom, left rear perspective view thereof.
INVENTORS:

Knox, John E.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
2278857,
2418433,
3073056,
4553728, May 23 1984 Multiple position bookstand
4793083, Oct 27 1986 Sign holder
4934853, Dec 27 1988 Typewriter copy holder apparatus
161644,
233919,
26507,
D310847, Feb 25 1987 REDICODE INC Message holder
D320045, Jan 04 1988 Collapsible copy holder stand
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
May 02 1990KNOX, JOHN E HEFENDEHL, HANS FRIEDRICHASSIGNMENT OF ASSIGNORS INTEREST 0053010497 pdf
May 11 1990Hans Friedrich Hefendehl(assignment on the face of the patent)
Jun 04 1998HEFENDEHL, HANS FRIEDRICHHelit Innovative Buroprodukte GmbHASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0092970300 pdf
MAINTENANCE FEES AND DATES:    Maintenance records on the USPTO
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