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			 The ornamental design for an interrupter switch, as shown and described.  | 
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FIG. 1 is a perspective view of an interrupter switch showing our new design in an open position for the purpose of disclosure;
FIG. 2 is a left side elevational view of the interrupter switch in closed position;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a top plan view thereof; and
FIG. 7 is a rear elevational view thereof.
Chabala, Leonard V., Rogers, Edward J.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Nov 18 1988 | S&C Electric Company | (assignment on the face of the patent) | / | |||
| Nov 18 1988 | CHABALA, LEONARD V | S&C ELECTRIC COMPANY, A CORP OF DE | ASSIGNMENT OF ASSIGNORS INTEREST | 004978 | /0366 | |
| Nov 18 1988 | ROGERS, EDWARD J | S&C ELECTRIC COMPANY, A CORP OF DE | ASSIGNMENT OF ASSIGNORS INTEREST | 004978 | /0366 | 
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