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Patent 1442378
Padlock Patent — Keyed
Patent 1442378
Inventor:
Robert L Williamson
View on USPTO / Google Patents ↗
Patent #
1442378
Issue Date
1922-03-01
Inventor
Robert L Williamson
Type
Keyed
Patent Drawings
Drawing 1
Drawing 2
Patent Details
Patent Number
1442378
Issue Date
1922-03-01
Inventor
Robert L Williamson
Patent Type
Keyed
External Link
https://patents.google.com/patent/US1442378/en ↗
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