Drilldown: Patents
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Patents > Office :
CA or
DE or
DEG
& Application number:
F0050304
& National tech categories:
DE 77h.5
& Family year:
1910 - 1919
& Number of text pages:
3-70
& Number of diagram pages:
1-2
& Number of figures:
4-7
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.