Letter sheet with return envelope
Patent 4730767 Issued on March 15, 1988. Estimated Expiration Date: 
April 30, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 30, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3802618 3833167 Print envelope Two way envelope Patent #: 4487360 InventorAssigneeApplicationNo. 06/847530 filed on 04/30/1986US Classes:229/305, Including means for removing at least part of the original mailing address from the original envelope229/70CouponExaminersPrimary: Little, WillisInternational ClassB65D 27/06 (20060101)AbstractA personalized envelope assembly including a return envelope is formed from two separate pieces of material comprising an outer blank for forming a letter sheet or the like and a patch which is adhered to the blank to form the rear panel of the return envelope. The letter sheet blank is prepared in web form and the patch is applied to the blank using window applying equipment or the like. The letter sheet blank further includes one or more coupon elements integral therewith and detachable therefrom for return mail. | |
