Drilldown: Patents
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Patents > Office
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??
or
CA
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DE
or
JP
or
MX
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RU
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SE
& Applicant is inventor:
None
& National tech categories:
DE 77h.15
& Family year:
1916
& Number of text pages:
3-70 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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