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Patent
   D316868
Priority
Mar 31 1989
Filed
Mar 31 1989
Issued
May 14 1991
Expiry
May 14 2005
Inventors
Johnson, C…
Assg.orig
SCHWAN S S…
Assg.curr
SCHWAN S F…
Entity
unknown
Referenced by
1
References
14
Maint.:
n/a
The ornamental design for slide calculator, as shown and described.

FIG. 1 is a perspective view of a slide calculator showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a front elevational view, the rear elevational view being a mirror image thereof;

FIG. 4 is a bottom plan view; and

FIG. 5 is a right side elevational view, the left side elevational view being a mirror image thereof.
INVENTORS:

Johnson, Craig E.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
6283473, Nov 19 1998 Method of operating progressive reel slot machines and device therefor
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
1866133,
2443882,
2452417,
2532619,
2777617,
3091389,
4028529, Aug 28 1975 Currency exchange calculator
4189634, Oct 29 1976 Slide rule for hyperalimentation dosage computations
4308450, Dec 22 1978 Baxter International Inc Two-piece slide calculator for determining metabolic requirements and parenteral feeding dosages
CA1064447,
224259,
D254078, Jun 20 1977 Slide frame for calculator or the like
GB19824,
GB789629,
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Mar 24 1989JOHNSON, CRAIG E SCHWAN S SALES ENTERPRISES, INC , 115 W COLLEGE DRIVE, MARSHALL, MN 56258-1796, A CORP OF MNASSIGNMENT OF ASSIGNORS INTEREST 0050590135 pdf
Mar 31 1989Schwan's Sales Enterprises, Inc.(assignment on the face of the patent)
Dec 27 2002SCHWAN S SALES ENTERPRISES, INC SCHWAN S FOOD MANUFACTURING, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0138870648 pdf
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