Modifiche

|Country=GB

|Country=GB

|ApplicationNum=12717/21

|ApplicationNum=12717/21

|ApplicationDate=1921-05-04

|ApplicationDate=1919-04-12

|PatentNum=182620

|PatentNum=182620

|PatentDate=1922-07-13

|PatentDate=1920-07-12

|PriorityDate=1921-05-04

|PriorityDate=1919-04-12

|Titolo=Improvements in or relating to fountain or reservoir pens

|Titolo=Improvements in or relating to fountain or reservoir pens

|Marca=Lang - Curzon - Summit

|Marca=Lang - Curzon - Summit