Drilldown: Patents
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Patents > Year granted:
1920 - 1929
& Inventor country :
FR or
GB or
HU or
NL
& Applicant type :
COMPANY or
COMPANY + INDIV or
INDIV or
UNIV-PRO-GOV
& Family year:
1915
& Number of claims:
3-4
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Showing below up to 7 results in range #1 to #7.