Drilldown: Patents
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Patents > Supplementary to patent :
Patent GB-1911-29012 or
Patent NO-1915-12-15 Carl Alfred Johansson
& Related to aircraft :
0.5 or
1911-07-04 or
1912-01-30 or
No or
Yes
& CPCs:
CPC B64C2700/6212
& Number of figures:
8-16
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