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File:Patent-GB-475970.pdf

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Inventor

William F. Johnson

Assignee

Mentmore Manufacturing Company Limited

Country

GB

Application N°

15921/36

Application Date

1936-06-06

Patent N°

475970

Brevettato

1937-11-30

Priorità

1936-06-06

Brand

Mentmore

Title

Improvements in or relating to self-filling fountain pens

Description

Sistema di caricamento

Riferimenti esterni

Informazioni

Brevetto per una variante di sistema di caricamento a sfiatatoio in cui la depressione viene ottenuta con un meccanismo simile al Touch Down che opera sulla pompetta. Stessa invenzione di nº FR-822628. Stessa invenzione di nº US-2123110. Stessa invenzione di nº CA-382339.

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current00:19, 28 November 2013Thumbnail for version as of 00:19, 28 November 20131,295 × 1,752, 4 pages (344 KB)Piccardi (talk | contribs){{PatentInfo |Inventor=William F. Johnson |Assignee=Mentmore Manufacturing Company Limited |Country=GB |ApplicationNum=15921/36 |ApplicationDate=1936-06-06 |PatentNum=475970 |PatentDate=1937-11-30 |PriorityDate=1936-06-06 |Titolo=Improvements in or rel...
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