Drilldown: Patents
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Patents > Inventor country
:
CH
or
DE
or
ES
or
HU
or
NL
& Applicant type
:
Hermann Burkardt
or
INDIV
& Grant date:
1900 - 1999
& National tech categories:
HU V/h
& CPCs
:
CPC B64B1/40
or
CPC B64C23/005
or
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airplane (95) ·
design (59) ·
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Balloons (11) ·
helicopter (9)
Application number:
Supplementary to patent:
Showing below up to 221 results in range #1 to #221.