Drilldown: Patents
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Patents > Office :
FR or
NZ or
US
& Filing date:
1917
& National tech categories :
FR 6.4 or
HU V/h or
USPC 244/22
& IPCs :
IPC B64B1/00 or
None
& Number of text pages:
1-2
& Number of diagram pages:
1-2
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.