Self-correcting examination sheet

Claim 1

A SELF-CORRECTING EXAMINATION DEVICE COMPRISING IN COMBINATION, A RELATIVELY THIN PAPER ANSWER SELECTION SHEET MEMBER, OPAQUE ANSWER SELECTION AREAS ON SAID ANSWER SELECTION SHEET, SAID OPAQUE ANSWER SELECTION AREAS BEING ARRAYED IN VERTICAL COLUMNS AND HORIZONTAL ROWS, AN ANSWER CODE SHEET MEMBER HAVING ARRAYED THEREON A PLURALITY OF ANSWER TAB AREAS CORRESPONDING IN NUMBER AND POSITION TO THE NUMBER AND POSITION OF THE ANSWER SELECTION AREAS ON SAID ANSWER SELECTION SHEET AND NORMALLY NON-VISIBLE INSTRUCTIONAL INDICIA AT SAID ANSWER AREAS, SAID ANSWER CODE SHEET BEING OF HEAVIER STOCK MATERIAL THAN SAID ANSWER SELECTION SHEET, MEANS ADHESIVELY LAMINATING SAID THIN ANSWER SELECTION SHEET TO THE SURFACE OF SAID ANSWER CODE SHEET WITH THE ANSWER TAB AREAS ON SAID ANSWER CODE SHEET BEHIND AND IN REGISTRY WITH THE OPAQUE ANSWER SELECTION AREAS ON SAID ANSWER SELECTION SHEET, SAID ANSWER TAB AREAS ON SAID ANSWER CODE SHEET BEING DEFINED BY A PLURALITY OF SLITS SEPARATED BY AT LEAST ONE RUPTURABLE SEGMENT AND BY AT LEAST ONE NON-RUPTURABLE SEGMENT, SAID SEGMENTS BEING INTEGRAL WITH SAID ANSWER CODE SHEET, SAID NON-RUPTURABLE SEGMENT FORMING A HINGE FOR SAID ANSWER SELECTION AREA OF SAID SECOND SHEET, WHEREBY SAID ANSWER TAB AREAS OF SAID SECOND SHEET, SHEET SWING ON AN ARC ABOUT SAID HINGES DURIONG THE RUPTURING OF THE ANSWER SELECTION AREAS OVERLYING SAME WHEN A PUNCH DEVICE PUNCTURES THE ANSWER SELECTION AREA OVERLYING SAME AND THE INDICIA AT THE ANSWER TAB AREA UNDERLYING THE PUNCTURED ANSWER SELECTION AREA IS VIEWABLE THROUGH THE PUNCTURED ANSWER SELECTION AREA TO A USER OF THE DEVICE ON REMOVAL OF SAID PUNCH DEVICE, AND SAID RUPTURABLE SEGMENTS AFTER RUPTURING ARE CAPABLE OF FRICTIONALLY RETAINING SAID ANSWER TAB AREA IN THE PLANE OF SAID ANSWER CODE SHEET.