Drilldown: Patents
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- Airplane (18)
- Airship (15)
- Companies (477)
- Event (141)
- Letters (683)
- Organizations (965)
- Patents (17585)
- Person (2124)
- Publications (24566)
- Techtypes (2376)
Patents > Year granted:
1920 - 1929
& Inventor country
:
GB
or
HU
or
NL
& Applicant type
:
COMPANY
or
COMPANY + INDIV
or
INDIV
or
UNIV-PRO-GOV
& National tech categories:
FR 6.4
& Number of claims:
3-4 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Use the filters below to narrow your results.
airplane (1) ·
aluminum (1) ·
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LTA (1) ·
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Showing below up to 2 results in range #1 to #2.