Drilldown: Patents
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Patents > Grant date:
1900 - 1999
& National tech categories:
USPC 244/28
& CPCs :
CPC B64B1/00 or
CPC B64C13/00 or
CPC B64C17/00 or
CPC B64C3/385
& Number of text pages:
1-2
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Showing below up to 4 results in range #1 to #4.
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- Timeline: Year filed
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- Calendar: Year filed
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