An envelope comprising a front portion and a rear portion. The front and rear portions define therebetween a space for receiving material, and one of the portions has a window therein located at a position for exposing postage indicia applied to the material within the space.
申请公布号
US6029883(A)
申请公布日期
2000.02.29
申请号
US19970979430
申请日期
1997.11.26
申请人
HECHINGER, STANLEY L.;ELLIS, II, CHARLES H.;SNOOK, STEPHEN ROBERT
发明人
HECHINGER, STANLEY L.;ELLIS, II, CHARLES H.;SNOOK, STEPHEN ROBERT
