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
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David Griffith Lewis
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Individual
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Individual
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Publication of GB190627630ApublicationCriticalpatent/GB190627630A/en
27,630. Lewis, D. G. Dec. 4. Envelopes; letter-sheets.-Relates to a letter-sheet which, when closed, cannot be opened without destroying some portion of it. The paper is folded along the lines d, Fig. 1, and the flaps b are stuck down on the folded portion, Fig. 3. The flaps c are then folded over the top of the paper and secured to the other side.
GB190627630D1906-12-041906-12-04Improvements in Combined Notepaper and Envelopes.
ExpiredGB190627630A
(en)