Drilldown: Patents

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Patents > Year filed: 1900 - 1909 & Office: DE & Inventor country : DE or NL & Number of figures: None

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Office: (Click arrow to add another value)
Inventors:
None (8) · Walter Hermann von Mach (2) · Richard Wilcke (2) · Paul Frederik Degn (2) · Albert Graff (2)
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Tech fields:
LTA (26) · balloon (13) · gas (10) · navigation (8) · propeller (7) · propulsion (7) · None (5) · whole (5) · safety (4) · design (4) · pressure (4) · hydrogen (3) · stability (3) · frame (3)
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Showing below up to 53 results in range #1 to #53.

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