Drilldown: Patents
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Patents > Office :
?? or
DE or
FI or
SU or
US
& Inventor country:
DE
& Applicant type:
None
& Publication date:
1800 - 1899
& IPCs:
None
& Number of text pages:
1-2
& Number of diagram pages:
1
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Showing below up to 6 results in range #1 to #6.