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|Application date||June 6, 1936 +|
|Application number||15921/36 +|
|Assigned to||Mentmore Manufacturing Company Limited +|
|Invented by||William F. Johnson +|
|Patent date||November 30, 1937 +|
|Patent description||Sistema di caricamento +|
|Patent number||475970 +|
|Patent title||Improvements in or relating to self-filling fountain pens +|
|Patented by||Mentmore +|
|Patented in||GB +|
|Priority date||June 6, 1936 +|
|Same invention of||+, + and File:Patent-CA-382339.pdf +|