Drilldown: Patents
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- Patents (17548)
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- Publications (24562)
- Techtypes (2373)
Patents > Year granted:
1920
& Office :
?? or
AT or
CH or
MX
& National tech categories :
AT 77d or
HU V/h or
USPC 244/153R
& Cites these patents:
None
& Number of text pages:
3-4
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Showing below up to 1 result in range #1 to #1.