Drilldown: Patents
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- Patents (17614)
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- Publications (24569)
- Techtypes (2381)
Patents > Year granted:
1915
& Office :
AT or
BE or
DE
& Supplementary to patent :
Patent FR-1912-455471 or
None
& National tech categories :
DE 77h.9 or
FR 5 or
USPC 244/30
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.