Revision history of "File:Patent-GB-190909893.pdf"

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Application dateApril 26, 1909 +
Application number190909893 +
Assigned toWilliam A. Welty +
Invented byWilliam A. Welty +
Patent dateJuly 1, 1909 +
Patent descriptionSistema di caricamento +
Patent number190909893 +
Patent titleImprovements in Self-filling Fountain Pens +
Patented byWelty +
Patented inGB +
Priority dateApril 27, 1908 +
Same invention ofFile:Patent-US-916513.pdf +
Used for featureHump filler +