Gwladys M. Davies, GB189607674A
Improvements in Bottles and the like, to Prevent them being Refilled.
GB
On May 16, 1896, Gwladys Muriel Davies of Cardiff, Wales, patented an ingenious bottle designed to prevent refilling. Her design featured internal glass channels and a movable stopper that automatically sealed the bottle after use, ensuring it could only be filled once - a safeguard against tampering or reuse.
Date of Application: 11 April 1896
Date of Issuance: 16 May 1896
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