Mailbox letter canceler
US4282809A · kind A · utility
1Cited by
22References
7Claims
0Family size
Inventor
Key dates
| Filing date | Aug 8, 1979 |
| Grant date | Aug 11, 1981 |
| Priority date | — |
| Expiry date | Aug 8, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07B2017/00209
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A mail canceling device which has at least one canceling die roller pair behind a mail receiving slot therein to cancel the mail as it is inserted into the mailbox. The one or more pairs of rollers can include postmark applying segments as well as canceling dies. The rollers can be provided along opposite edges of the slot. A finger space is positioned centrally in the slot and between the rollers so that the mailer's finger can be used to assure that the envelope or postcard passes completely through the rollers and falls into the storage portion of the mailbox.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.