Drilldown: Patents
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- Airplane (18)
- Airship (15)
- Companies (480)
- Event (141)
- Letters (683)
- Organizations (967)
- Patents (17615)
- Person (2154)
- Publications (24571)
- Techtypes (2381)
Patents > Office :
DE or
NL or
UN
& Supplementary to patent :
Patent DE-1917-300978 or
Patent NO-1915-12-15 Carl Alfred Johansson
& Related to aircraft :
1 or
marine or
navigation
& Citations from after 1930:
None
& Number of figures:
None
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.