Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Inventor
James Dewar
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by IndividualfiledCriticalIndividual
Application grantedgrantedCritical
Publication of GB190702345ApublicationCriticalpatent/GB190702345A/en
2345. Dewar, J. Jan. 30. Enveloppes.-In order to prevent tampering with envelopes, the flaps are formed so as just to meet, and are stuck down on a sheet of paper, between which and the front of the envelope the enclosure is placed. The sheet of paper is preferably faced with thin tissue which would be torn by an attempt to open the envelope.
GB190702345D1907-01-301907-01-30An Improved Envelope or Postal Wrapper
ExpiredGB190702345A
(en)