Revision history of "File:Patent-US-1905920.pdf"

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  • (cur | prev) 01:26, 23 August 2013Piccardi (talk | contribs). . (409 bytes) (+4)
  • (cur | prev) 19:34, 14 July 2012Piccardi (talk | contribs). . (405 bytes) (+405). . ({{PatentInfo |Inventor=William H. Lindemon |Assignee=W. A. Sheaffer Pen Company |Country=US |ApplicationNum=515898 |ApplicationDate=1931-02-24 |PatentNum=1905920 |PatentDate=1933-04-25 |PriorityDate=1931-02-24 |Titolo=Mechanical pencil |Marca=Sheaffer ...)
Facts about "Patent-US-1905920.pdf"
Application dateFebruary 24, 1931 +
Application number515898 +
Assigned toW. A. Sheaffer Pen Company +
Invented byWilliam H. Lindemon +
Patent dateApril 25, 1933 +
Patent descriptionMatita per combo +
Patent number1905920 +
Patent titleMechanical pencil +
Patented byW. A. Sheaffer Pen Company +
Patented inUS +
Priority dateFebruary 24, 1931 +