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Claim 1

AN ENVELOPE INCLUDING GENERALLY RECTANGULAR PANELS OF SUBSTANTIALLY THE SAME SIZE AND HAVING REGISTERING INNER FACES PROVIDING A POCKET THEREBETWEEN, SAID PANELS BEING CONNECTED TOGETHER ALONG TWO OF THEIR EDGES FOR CLOSING PERMANENTLY TWO ADJACENT SIDES OF THE POCKET, ONE OF THE OTHER EDGES OF THE PANELS PROVIDING THEREBETWEEN AN INSERT OPENING FOR INSERTING AN ENCLOSURE INTO SAID POCKET, A CLOSURE FLAP ON ONE EDGE OF THE INSERT OPENING, GUM EXTENDING ALONG SUBSTANTIALLY THE FULL LENGTH OF THE CLOSURE FLAP TO PERMANENTLY SEAL THE INSERT OPENING CLOSED WHEN THE ENVELOPE IS USED, THE REMAINING OTHER EDGES OF THE ENVELOPE PROVIDING A REMOVAL OPENING FOR REMOVAL OF THE ENCLOSURE FROM SAID POCKET AFTER THE CLOSURE FLAP IS SEALED, AN OPENING FLAP FOR CLOSING THE REMOVAL OPENING AND HAVING CONNECTION WITH ONE OF THE REMAINING EDGES THAT PROVIDE SAID REMOVAL OPENING AND HAVING A FOLD AT SAID CONNECTION FOR BRINGING SAID OPENING FLAP INTO THE POCKET AND BETWEEN SAID PANELS, A PULL TAB CONNECTED WITH THE OPENING FLAP BY A FOLD REVERSE TO THE FOLD OF SAID OPENING FLAP FOR EXTENDING THE PULL TAB OUTWARDLY IN THE DIRECTION OF THE FOLD AT SAID CONNECTION AND BETWEEN THE OPENING FLAP AND THE INNER FACE OF THE PANEL THAT OVERLIES SAID OPENING FLAP WITH SAID PULL TAB TERMINATING NEAR THE EDGE OF SAID OVERLYING PANEL, SAID PULL TAB BEING OF A SIZE RELATIVELY TO THE OPENING FLAP TO LEAVE AN AREA OF THE OPENING FLAP IN CONTACT WITH THE OVERLYING PANEL AND ON THE SIDE OF THE INSERT OPENING, AND A SPOT OF ADHESIVE CONNECTING SAID AREA OF THE OPENING FLAP TO THE INNER FACE OF SAID OVERLYING PANEL FOR SEALING THE REMOVAL OPENING AND CLOSING THE END OF THE INSERT OPENING PRIOR TO SEALING OF THE CLOSURE FLAP, SAID OPENING FLAP HAVING A CUTTING EDGE MOVABLE IN THE PLANE OF SAID AREA AND IN A PATH ACROSS THE ADHESIVE SPOT FOR CUTTING THROUGH THE SEAL PROVIDED BY THE ADHESIVE SPOT UPON PULLOUT OF THE PULL TAB AND TO WITHDRAW THE OPENING FLAP AFTER CUTTING THROUGH SAID SEAL.