Patent
   D256023
Priority
Dec 01 1977
Filed
Dec 01 1977
Issued
Jul 22 1980
Expiry
Jul 22 1994
Assg.orig
Entity
unknown
4
5
n/a
The ornamental design for a stage for transparency projection, as shown.

FIG. 1 is a top perspective view of a stage for transparency projection showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is an inverted bottom plan view thereof;

FIG. 5 is a right side elevational view thereof; and

FIG. 6 is a front elevational view thereof.

Constantine, Paul, Ettinger, Melvyn, Rubin, Harry S.

Patent Priority Assignee Title
D273959, Dec 07 1981 Transparency frame for overhead projector
D287858, Aug 19 1982 KURT HELGE LUNDEBY Transparency mount for overhead projectors
D412007, Oct 10 1997 Viewlight Systems Limited Masking panel
D865894, Nov 09 2017 NOVATION IQ LLC Floating chair
Patent Priority Assignee Title
3269261,
3537792,
3544211,
3642359,
GB1518275,
////
Executed onAssignorAssigneeConveyanceFrameReelDoc
Jan 01 1900JUDY COMPANY THEJUDY INSTRUCTO COMPANYCHANGE OF NAME SEE DOCUMENT FOR DETAILS EFFECTIVE 12 27 830042440213 pdf
Dec 01 1977Instructo/McGraw-Hill, Inc.(assignment on the face of the patent)
Jul 29 1983INSTRUCTO MCGRAW HILL INCJUDY COMPANY THEASSIGNMENT OF ASSIGNORS INTEREST 0042220471 pdf
May 05 1986SILVER BURDETT COMPANYGINN PUBLISHING, INC , A CORP OF DE ASSIGNMENT OF ASSIGNORS INTEREST 0045600373 pdf
n/a
Date Maintenance Fee Events


n/a
Date Maintenance Schedule