Patent
   D243288
Priority
Oct 09 1975
Filed
Oct 09 1975
Issued
Feb 01 1977
Expiry
Feb 01 1991
Assg.orig
Entity
unknown
6
5
n/a
The ornamental design for an orthoptic therapy bar with prisms, substantially as shown and described.

FIG. 1 is a perspective view of a bar with prisms, embodying my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is an end view thereof;

FIG. 6 is a perspective view of a second embodiment of my new design;

FIG. 7 is a front view thereof;

FIG. 8 is a perspective view of a third embodiment of my new design; and

FIG. 9 is a front view thereof.

Adams, Anthony J., Jampolsky, Arthur, Spitzberg, Larry A., Kapash, Richard J., Flom, Merton C.

Patent Priority Assignee Title
D251606, May 30 1978 Visual input stress aid kit
D251607, May 30 1978 Visual input stress aid kit
D775678, Jul 30 2015 GULDEN OPHTHALMICS INC.; GULDEN OPHTHALMICS INC Vertical prism bar
D833609, Jul 30 2015 GULDEN OPHTHALMICS INC Horizontal prism bar
D908759, Nov 20 2018 MPNICS CO., LTD. Optical element for optical communication
D918981, Nov 20 2018 MPNICS CO., LTD. Optical element for optical communication
Patent Priority Assignee Title
2376554,
2619872,
2837087,
2840073,
3787112,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Oct 09 1975Optical Sciences Group, Inc.(assignment on the face of the patent)
Mar 31 1983OPTICAL SCIENCES GROUP, INC OSG A ORP OF CAMINNESOTA MINING AND MANUFACTURING COMPANY, 3M CENTER ST PAUL, MN 55144 3M A CORP OF DEASSIGNMENT OF ASSIGNORS INTEREST 0041310956 pdf
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