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			 The ornamental design for a medical suction instrument, substantially as is shown and described.  | 
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FIG. 1 is a top perspective view of a medical suction instrument showing my new design;
FIG. 2 is a side elevation thereof;
FIG. 3 is a front elevation thereof;
FIG. 4 is a rear elevation thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a top plan view of a modified embodiment of the instrument illustrated in FIG. 1;
FIG. 7 is a top plan view of the embodiment illustrated in FIG. 1;
FIG. 8 is a cross-section taken on line 8--8 of FIG. 6; and
FIG. 9 is a cross-section taken on line 9--9 of FIG. 7.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Jun 23 1976 | Dart Industries Inc. | (assignment on the face of the patent) | / | |||
| Sep 15 1986 | PROFESSIONAL MEDICAL PRODUCTS, INC | GENERAL ELECTRIC CREDIT CORPORATION, A CORP OF N Y | ASSIGNMENT OF ASSIGNORS INTEREST | 004665 | /0944 | |
| Oct 27 1986 | DART INDUSTRIES INC , A DE CORP | PROFESSIONAL MEDICAL PRODUCTS, INC , A DE CORP | ASSIGNMENT OF ASSIGNORS INTEREST | 004659 | /0818 | |
| Mar 28 1990 | GENERAL ELECTRIC CAPITAL CORPORATION, F K A GENERAL ELECTRIC CREDIT CORPORATION | PROFESSIONAL MEDICAL PRODUCTS, INC | RELEASED BY SECURED PARTY SEE DOCUMENT FOR DETAILS | 005300 | /0821 | 
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