File:Patent-US-1920770.pdf

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Original file(1,159 × 1,704 pixels, file size: 328 KB, MIME type: application/pdf, 5 pages)
Inventor

Ivan D. Tefft, Kenneth S. Parker

Assignee

The Parker Pen Company

Country

US

Application N°

542030

Application Date

1931-06-04

Patent N°

1920770

Brevettato

1933-08-01

Priorità

1931-06-04

Brand

Parker

Title

Mechanical pencil

Description

Matita meccanica

Riferimenti esterni

Informazioni

Brevetto per una matita meccanica.

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current02:10, 31 July 2012Thumbnail for version as of 02:10, 31 July 20121,159 × 1,704, 5 pages (328 KB)Piccardi (talk | contribs){{PatentInfo |Inventor=Ivan D. Tefft, Kenneth S. Parker |Assignee=Parker Pen Company |Country=US |ApplicationNum=542030 |ApplicationDate=1931-06-04 |PatentNum=1920770 |PatentDate=1933-08-01 |PriorityDate=1931-06-04 |Titolo=Mechanical pencil |Marca=Park...
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Facts about "Patent-US-1920770.pdf"
Application dateJune 4, 1931 +
Application number542030 +
Assigned toThe Parker Pen Company +
Invented byIvan D. Tefft + and Kenneth S. Parker +
Patent dateAugust 1, 1933 +
Patent descriptionMatita meccanica +
Patent number1920770 +
Patent titleMechanical pencil +
Patented byThe Parker Pen Company +
Patented inUS +
Priority dateJune 4, 1931 +