Microwave oven door closure

Claim 1

IN A MICROWAVE OVEN ASSEMBLY HAVING A MICROWAVE GENERATOR, THE COMBINATION OF, A LINER FORMING AN OVEN CAVITY, SAID LINER INCLUDING A CONTINUOUS FLANGE FORMING AN OPENING INTO SAID CAVITY, A CONTINUOUS PERIPHERAL FRAME MEMBER FORMING A DOOR OPENING, A SEE-THROUGH WINDOW ASSEMBLY BLOCKING SAID OPENING INCLUDING A FLAT PERFORATED METAL CORE FOR BLOCKING MICROWAVE ENERGY, AN IMPERFORATE SHEET OF TRANSPARENT MATERIAL IN JUXTAPOSITION WITH EACH FACE OF SAID PERFORATED METAL CORE, MEANS FOR PREVENTING PENETRATION OF VAPOR BETWEEN SAID CORE AND SAID SHEETS, SAID CORE INCLUDING AN IMPERFORATE FLEXIBLE FLANGE DIRECTED OUTWARDLY OF SAID DOOR OPENING TO OVERLIE SAID LINER FLANGE, SAID FLEXIBLE CORE FLANGE BIASINGLY ENGAGING SAID LINER FLANGE WHEN THE DOOR IS CLOSED TO PREVENT MICROWAVE LEAKAGE AROUND THE PERIPHERY OF THE DOOR, AND A COATING OF VOLTAGE ATTENUATING MATERIAL ON ONE OF SAID FLANGES SERVING TO PREVENT MICROWAVE ARCING AT THE JUNCTURE BETWEEN THE OVEN LINER AND THE DOOR CLOSURE.