| 4919324 | Envelope | April, 1990 | Hottle | 229/68.1 |
| 3380648 | Reusable envelope | April, 1968 | DeLyra | 229/71 |
| 3221980 | System for validating mail by postal certification | December, 1965 | Mercur | 229/71 |
| 2985464 | Mailing instrument | May, 1961 | McFarland | 229/714 |
| 2825498 | Mailing envelope | March, 1958 | Alves | 229/68.1 |
| 2804395 | Envelopes and the like with remoistenable adhesive comprising polyvinyl alcohol | August, 1957 | Boyajian | 229/68.1 |
| 2035218 | Direct by mail advertising device | March, 1936 | Bloom | 229/68.1 |
| 1988908 | Mail covering | January, 1935 | MacKinnon | 229/71 |
| 0701839 | N/A | June, 1902 | Callahan | 229/71 |
FIG. 1 is a front elevational view of a stampless envelope showing my new design; and,
FIG. 2 is a rear elevational view thereof.
It is understood that the sides of the envelope are of no substantial thickness.