Drilldown: Patents
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Patents > Year granted:
1910 - 1919
& Office :
BE or
CA or
GB or
NL
& Applicant firm:
None
& Filing date:
1917
& CPCs:
None
& Number of claims:
4-6
& Number of figures:
1-3
Use the filters below to narrow your results.
Showing below up to 2 results in range #1 to #2.