Drilldown: Patents
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Patents > Year filed:
1910 - 1919
& Office :
AU or
CL or
DE or
FI
& National tech categories :
DE 77h.15 or
DE 77h.5 or
FR 6.4
& Family year:
1913
& Number of text pages:
1
& Number of figures:
1
Use the filters below to narrow your results.
Showing below up to 2 results in range #1 to #2.