Drilldown: Patents
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- Airplane (18)
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- Companies (481)
- Event (141)
- Letters (683)
- Organizations (969)
- Patents (17649)
- Person (2202)
- Publications (24577)
- Techtypes (2415)
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None (11) ·
coal (1) ·
design (1) ·
machinery (1) ·
model (1) ·
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Showing below up to 16 results in range #1 to #16.