Drilldown: Patents
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Patents > Office :
ES or
GR or
US
& Inventor country:
US
& Filing date:
1960 - 1969
& Granted :
Yes or
None
& National tech categories :
HU V/h or
USPC 244/153R or
USPC 244/80
& Number of text pages:
None
Use the filters below to narrow your results.
Showing below up to 4 results in range #1 to #4.