Drilldown: Patents
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Patents > Office
:
CA
or
DE
or
DEG
or
DK
& Application number:
F0050304
& National tech categories
:
DE 77h
or
DE 77h.5
& Family year:
1910 - 1919
& Number of text pages:
3-70
& Number of diagram pages:
1-2
& Number of figures:
4-7 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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